Reduce resource files as background images for shapes and use color tint method instead. Now a combination of 73 colors and 4 styles are possible.

wear/src/main/java/info/nightscout/androidaps/interaction/configurationActivities/RICTxWF01ConfigurationActivity.java

@@ -16,6 +16,7 @@ public class RICTxWF01ConfigurationActivity extends WearPreferenceActivity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        setTitle("watchface");
         addPreferencesFromResource(R.xml.rictxwf01configuration);
         ViewGroup view = (ViewGroup) getWindow().getDecorView();
         removeBackgroundRecursively(view);

wear/src/main/java/info/nightscout/androidaps/watchfaces/RICTxWF01.java

@@ -1,12 +1,14 @@
 package info.nightscout.androidaps.watchfaces;
 
 import android.content.Intent;
+import android.content.res.ColorStateList;
 import android.os.Vibrator;
 import android.support.wearable.watchface.WatchFaceStyle;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.widget.LinearLayout;
 import androidx.core.content.ContextCompat;
+
 import com.ustwo.clockwise.common.WatchFaceTime;
 import com.ustwo.clockwise.common.WatchMode;
 import info.nightscout.androidaps.R;
@@ -101,19 +103,34 @@ public class RICTxWF01 extends BaseWatchFace {
         LinearLayout mShapesElements = layoutView.findViewById(R.id.shapes_elements);
         if (mShapesElements != null) {
             String displayFormatType = (mShapesElements.getContentDescription().toString().startsWith("round") ? "round" : "rect");
-            String styleDrawableName = "rictxwf01_bg_" + sharedPrefs.getString("rictxwf01_frameStyle", "red") + "_" + displayFormatType;
+            String displayStyle=sharedPrefs.getString("rictxwf01_frameStyle", "full");
-            Log.d("rictxwf01_frameStyle", styleDrawableName);
+            String displayFrameColor=sharedPrefs.getString("rictxwf01_frameColor", "red");
+            String displayFrameColorSaturation=sharedPrefs.getString("rictxwf01_frameColorSaturation", "500");
+
+            // Load image with shapes
+            String styleDrawableName = "rictxwf01_bg_" + displayStyle + "_" + displayFormatType;
             try {
                 mShapesElements.setBackground(getResources().getDrawable(getResources().getIdentifier(styleDrawableName, "drawable", getApplicationContext().getPackageName())));
             } catch (Exception e) {
                 Log.e("rictxwf01_frameStyle", "RESOURCE NOT FOUND >> " + styleDrawableName);
             }
+
+            // set background-tint-color
+            if (displayStyle.equalsIgnoreCase("rainbow") || displayStyle.equalsIgnoreCase("none")) {
+                mShapesElements.setBackgroundTintList(null);
+            } else {
+                String strColorName =((   displayFrameColor.equals("white") || displayFrameColor.equals("black")  )?displayFrameColor:displayFrameColor+"_"+displayFrameColorSaturation);
+                Log.v("rictxwf01_strColorName",strColorName);
+                try {
+                    ColorStateList colorStateList = ContextCompat.getColorStateList(getApplicationContext(), getResources().getIdentifier(strColorName, "color", getApplicationContext().getPackageName()));
+                    mShapesElements.setBackgroundTintList(colorStateList);
+                } catch (Exception e) {
+                    mShapesElements.setBackgroundTintList(null);
+                    Log.e("rictxwf01_ColorName", "COLOR NOT FOUND >> " + strColorName);
+                }
             }
 
-
+        }
-        /* ToDo  Implement a configurable background image
-         *  layoutView.setBackground();
-         */
     }
 
     protected void setColorLowRes() {

wear/src/main/res/layout/rect_activity_rictxwf01.xml

@@ -2,12 +2,12 @@
 
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main_layout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".watchfaces.Home2"
-    tools:deviceIds="wear_square"
     android:background="@color/black"
-    android:id="@+id/main_layout">
+    tools:context=".watchfaces.RICTxWF01"
+    tools:deviceIds="wear_square">
 
 
     <!-- background-image with shapes elements-->
@@ -15,7 +15,7 @@
         android:id="@+id/shapes_elements"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:background="@drawable/rictxwf01_bg_red_rect"
+        android:background="@drawable/rictxwf01_bg_full_rect"
         android:contentDescription="rect-shape-elements"
         android:orientation="horizontal" />
 

wear/src/main/res/layout/round_activity_rictxwf01.xml

@@ -15,7 +15,7 @@
         android:id="@+id/shapes_elements"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:background="@drawable/rictxwf01_bg_red_round"
+        android:background="@drawable/rictxwf01_bg_full_round"
         android:contentDescription="round-shape-elements"
         android:orientation="horizontal" />
 

wear/src/main/res/values/colors.xml

@@ -42,37 +42,138 @@
     <color name="basal_dark_lowres">@color/grey_500</color>
 
 
+
+
+
+
     <!-- Material Design - Color Palette -->
+    <!-- https://designguidelines.withgoogle.com/wearos/style/color.html#color-dark-color-palette-for-wear-os -->
+    <!-- https://material.io/design/color/the-color-system.html#tools-for-picking-colors  -->
     <!-- Red -->
+    <color name="red_100">#FFCDD2</color>
+    <color name="red_500">#F44336</color>
     <color name="red_600">#E53935</color>
+    <color name="red_700">#D32F2F</color>
+    <color name="red_900">#B71C1C</color>
     <color name="RED">#FF0000</color>
-    <!-- Red -->
+
+    <!-- Pink -->
+    <color name="pink_100">#F8BBD0</color>
+    <color name="pink_500">#E91E63</color>
+    <color name="pink_700">#C2185B</color>
+    <color name="pink_900">#880E4F</color>
+
+    <!-- Purple -->
+    <color name="purple_100">#E1BEE7</color>
+    <color name="purple_500">#9C27B0</color>
+    <color name="purple_700">#7B1FA2</color>
+    <color name="purple_900">#4A148C</color>
+
+    <!-- Deepe Purple -->
+    <color name="deeppurple_100">#D1C4E9</color>
+    <color name="deeppurple_500">#673AB7</color>
+    <color name="deeppurple_700">#512DA8</color>
+    <color name="deeppurple_900">#311B92</color>
+
+    <!-- Indigo -->
+    <color name="indigo_100">#C5CAE9</color>
+    <color name="indigo_500">#3F51B5</color>
+    <color name="indigo_700">#303F9F</color>
+    <color name="indigo_900">#1A237E</color>
 
     <!-- Blue -->
+    <color name="blue_100">#BBDEFB</color>
     <color name="blue_300">#64B5F6</color>
-    <!-- Blue -->
+    <color name="blue_500">#2196F3</color>
+    <color name="blue_700">#1976D2</color>
+    <color name="blue_900">#0D47A1</color>
+    <color name="BLUE">#0000FF</color>
+
+    <!-- Light Blue -->
+    <color name="lightblue_100">#B3E5FC</color>
+    <color name="lightblue_500">#03A9F4</color>
+    <color name="lightblue_700">#0288D1</color>
+    <color name="lightblue_900">#01579B</color>
+
+    <!-- Cyan -->
+    <color name="cyan_100">#B2EBF2</color>
+    <color name="cyan_500">#00BCD4</color>
+    <color name="cyan_700">#0097A7</color>
+    <color name="cyan_900">#006064</color>
+
+    <!-- Teal -->
+    <color name="teal_100">#B2DFDB</color>
+    <color name="teal_500">#009688</color>
+    <color name="teal_700">#00796B</color>
+    <color name="teal_900">#004D40</color>
+
+    <!-- Green -->
+    <color name="green_100">#C8E6C9</color>
+    <color name="green_500">#4CAF50</color>
+    <color name="green_700">#388E3C</color>
+    <color name="green_900">#1B5E20</color>
+
+    <!-- Light Green -->
+    <color name="lightgreen_100">#DCEDC8</color>
+    <color name="lightgreen_500">#8BC34A</color>
+    <color name="lightgreen_700">#689F38</color>
+    <color name="lightgreen_900">#33691E</color>
+
+    <!-- Lime -->
+    <color name="lime_100">#F0F4C3</color>
+    <color name="lime_500">#CDDC39</color>
+    <color name="lime_700">#AFB42B</color>
+    <color name="lime_900">#827717</color>
 
     <!-- Yellow -->
+    <color name="yellow_100">#FFF9C4</color>
+    <color name="yellow_500">#FFEB3B</color>
     <color name="yellow_700">#FBC02D</color>
+    <color name="yellow_900">#F57F17</color>
     <color name="yellow_A200">#FFFF00</color>
-    <!-- Yellow -->
 
-    <!-- Grey -->
+    <!-- Amber -->
+    <color name="amber_100">#FFECB3</color>
+    <color name="amber_500">#FFC107</color>
+    <color name="amber_700">#FFA000</color>
+    <color name="amber_900">#FF6F00</color>
+
+    <!-- Orange -->
+    <color name="orange_100">#FFE0B2</color>
+    <color name="orange_500">#FF9800</color>
+    <color name="orange_700">#F57C00</color>
+    <color name="orange_900">#E65100</color>
+
+    <!-- Deep Orange -->
+    <color name="deeporange_100">#FFCCBC</color>
+    <color name="deeporange_500">#FF5722</color>
+    <color name="deeporange_700">#E64A19</color>
+    <color name="deeporange_900">#BF360C</color>
+
+    <!-- Brown -->
+    <color name="brown_100">#D7CCC8</color>
+    <color name="brown_500">#795548</color>
+    <color name="brown_700">#5D4037</color>
+    <color name="brown_900">#3E2723</color>
+
+    <!-- Gray / Grey -->
+        <!-- @ToDo   Replace all usage from grey to gray, because that's the official color name in https://material.io/deign/color/  -->
     <color name="grey_50">#FAFAFA</color>
+    <color name="gray_100">#F5F5F5</color>
     <color name="grey_300">#E0E0E0</color>
     <color name="grey_500">#9E9E9E</color>
+    <color name="gray_500">#9E9E9E</color> <!-- needed because rICTxWF01 generate color-names as grAy -->
+    <color name="gray_700">#616161</color>
+    <color name="gray_900">#212121</color>
     <color name="grey_steampunk">#333333</color>
-    <!-- Grey -->
 
-    <!-- Blue Grey -->
+    <!-- Blue Gray -->
-    <color name="BLUE">#0000FF</color>
+    <color name="bluegray_100">#CFD8DC</color>
-    <!-- Blue Grey -->
+    <color name="bluegray_500">#607D8B</color>
+    <color name="bluegray_700">#455A64</color>
+    <color name="bluegray_900">#263238</color>
 
-    <!-- Black -->
+    <!-- Black / White-->
     <color name="black">#000000</color>
-    <!-- Black -->
-
-    <!-- White -->
     <color name="white">#FFFFFF</color>
-    <!-- White -->
 </resources>

wear/src/main/res/values/rictxwf01_arrays.xml

@@ -1,27 +1,69 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string-array name="rictxwf01_styles_name">
-        <item>@string/color_name_red</item>
+        <item>@string/style_none</item>
-        <item>@string/color_name_deeppurple</item>
+        <item>@string/style_minimal</item>
-        <item>@string/color_name_indigo</item>
+        <item>@string/style_full</item>
-        <item>@string/color_name_lightblue</item>
+        <item>@string/style_rainbow</item>
-        <item>@string/color_name_lime</item>
-        <item>@string/color_name_orange</item>
-        <item>@string/color_name_bluegray</item>
-        <item>@string/style_rainbowstyle</item>
-        <item>@string/style_simplestyle</item>
-        <item>@string/style_nostyle</item>
     </string-array>
     <string-array name="rictxwf01_styles_values">
+        <item>none</item>
+        <item>minimal</item>
+        <item>full</item>
+        <item>rainbow</item>
+    </string-array>
+
+    <string-array name="rictxwf01_color_name">
+        <item>@string/color_name_red</item>
+        <item>@string/color_name_pink</item>
+        <item>@string/color_name_purple</item>
+        <item>@string/color_name_deeppurple</item>
+        <item>@string/color_name_indigo</item>
+        <item>@string/color_name_blue</item>
+        <item>@string/color_name_lightblue</item>
+        <item>@string/color_name_cyan</item>
+        <item>@string/color_name_teal</item>
+        <item>@string/color_name_green</item>
+        <item>@string/color_name_lightgreen</item>
+        <item>@string/color_name_lime</item>
+        <item>@string/color_name_yellow</item>
+        <item>@string/color_name_amber</item>
+        <item>@string/color_name_orange</item>
+        <item>@string/color_name_deeporange</item>
+        <item>@string/color_name_brown</item>
+        <item>@string/color_name_gray</item>
+        <item>@string/color_name_bluegray</item>
+        <item>@string/color_name_white</item>
+    </string-array>
+    <string-array name="rictxwf01_color_values">
         <item>red</item>
+        <item>pink</item>
+        <item>purple</item>
         <item>deeppurple</item>
         <item>indigo</item>
+        <item>blue</item>
         <item>lightblue</item>
+        <item>cyan</item>
+        <item>teal</item>
+        <item>green</item>
+        <item>lightgreen</item>
         <item>lime</item>
+        <item>yellow</item>
+        <item>amber</item>
         <item>orange</item>
+        <item>deeporange</item>
+        <item>brown</item>
+        <item>gray</item>
         <item>bluegray</item>
-        <item>rainbow</item>
+        <item>white</item>
-        <item>simplestyle</item>
-        <item>nostyle</item>
     </string-array>
+
+
+    <string-array name="rictxwf01_color_saturation">
+        <item>100</item>
+        <item>500</item>
+        <item>700</item>
+        <item>900</item>
+    </string-array>
+
 </resources>

wear/src/main/res/values/strings.xml

@@ -117,18 +117,40 @@
     <string name="unit_h" comment="One letter shortcut for: Hour" maxLength="1">h</string>
     <string name="unit_d" comment="One letter shortcut for: Day" maxLength="1">d</string>
     <string name="unit_w" comment="One letter shortcut for: Week" maxLength="1">w</string>
-    <string name="pref_choose_your_style">Choose your style</string>
-    <string name="pref_vibrate_hourly">vibrate hourly</string>
-    <string name="color_name_deeppurple">deep purple</string>
-    <string name="color_name_red">red</string>
-    <string name="color_name_orange">orange</string>
-    <string name="color_name_lime">lime</string>
-    <string name="color_name_indigo">indigo</string>
-    <string name="style_nostyle">no style</string>
-    <string name="style_simplestyle">simple style</string>
-    <string name="color_name_bluegray">blue gray</string>
-    <string name="color_name_lightblue">light blue</string>
-    <string name="style_rainbowstyle">rainbow style</string>
 
 
+    <string name="color_name_red">red</string>
+    <string name="color_name_pink">pink</string>
+    <string name="color_name_purple">purple</string>
+    <string name="color_name_deeppurple">deep purple</string>
+    <string name="color_name_indigo">indigo</string>
+    <string name="color_name_blue">blue</string>
+    <string name="color_name_lightblue">light blue</string>
+    <string name="color_name_cyan">cyan</string>
+    <string name="color_name_teal">teal</string>
+    <string name="color_name_green">green</string>
+    <string name="color_name_lightgreen">light green</string>
+    <string name="color_name_lime">lime</string>
+    <string name="color_name_yellow">yellow</string>
+    <string name="color_name_amber">amber</string>
+    <string name="color_name_orange">orange</string>
+    <string name="color_name_deeporange">deep orange</string>
+    <string name="color_name_brown">brown</string>
+    <string name="color_name_gray">gray</string>
+    <string name="color_name_bluegray">blue gray</string>
+    <string name="color_name_white">white</string>
+    <string name="color_name_black">black</string>
+
+
+
+    <string name="pref_choose_your_style">Choose your style</string>
+    <string name="style_none">no style</string>
+    <string name="style_minimal">minimal style</string>
+    <string name="style_full">full style</string>
+    <string name="style_rainbow">rainbow style</string>
+
+    <string name="pref_choose_your_color">Choose your color</string>
+    <string name="pref_choose_your_color_saturation">Choose your color saturation</string>
+    <string name="pref_vibrate_hourly">vibrate hourly</string>
+
 </resources>

wear/src/main/res/xml/rictxwf01configuration.xml

@@ -6,10 +6,23 @@
     <ListPreference
         android:key="rictxwf01_frameStyle"
         android:title="@string/pref_choose_your_style"
-        android:defaultValue="red"
+        android:defaultValue="full"
         android:entries="@array/rictxwf01_styles_name"
         android:entryValues="@array/rictxwf01_styles_values"/>
 
+    <ListPreference
+        android:key="rictxwf01_frameColor"
+        android:title="@string/pref_choose_your_color"
+        android:defaultValue="red"
+        android:entries="@array/rictxwf01_color_name"
+        android:entryValues="@array/rictxwf01_color_values"/>
+    <ListPreference
+        android:key="rictxwf01_frameColorSaturation"
+        android:title="@string/pref_choose_your_color_saturation"
+        android:defaultValue="700"
+        android:entries="@array/rictxwf01_color_saturation"
+        android:entryValues="@array/rictxwf01_color_saturation"/>
+
     <CheckBoxPreference
         android:key="show_date"
         android:title="@string/pref_show_date"
@@ -17,15 +30,6 @@
         app:wear_iconOff="@drawable/settings_off"
         app:wear_iconOn="@drawable/settings_on" />
 
-    <!--  Idea for future implementation  @ToDo Implement Background-Images
-    <ListPreference
-        android:key="rictxwf01_backgroundImage"
-        android:title="Background Image"
-        android:defaultValue="red"
-        android:entries="@array/rictxwf01_backgroundimage_name"
-        android:entryValues="@array/rictxwf01_backgroundimage_values" />
-    -->
-
     <CheckBoxPreference
         android:key="rictxwf01_vibrateHourly"
         android:title="@string/pref_vibrate_hourly"