diff --git a/app/src/main/res/drawable-hdpi/ic_keyboard_arrow_left_black_24dp.xml b/app/src/main/res/drawable-hdpi/ic_keyboard_arrow_left_black_24dp.xml
index c9f7747..3dafd87 100644
--- a/app/src/main/res/drawable-hdpi/ic_keyboard_arrow_left_black_24dp.xml
+++ b/app/src/main/res/drawable-hdpi/ic_keyboard_arrow_left_black_24dp.xml
@@ -4,6 +4,6 @@
         android:viewportWidth="24.0"
         android:viewportHeight="24.0">
     <path
-        android:fillColor="#FF000000"
+        android:fillColor="?attr/standardVectorGraphic"
         android:pathData="M15.41,16.09l-4.58,-4.59 4.58,-4.59L14,5.5l-6,6 6,6z"/>
 </vector>
diff --git a/app/src/main/res/drawable-hdpi/ic_keyboard_arrow_right_black_24dp.xml b/app/src/main/res/drawable-hdpi/ic_keyboard_arrow_right_black_24dp.xml
index a3d1622..9d4dc66 100644
--- a/app/src/main/res/drawable-hdpi/ic_keyboard_arrow_right_black_24dp.xml
+++ b/app/src/main/res/drawable-hdpi/ic_keyboard_arrow_right_black_24dp.xml
@@ -4,6 +4,6 @@
         android:viewportWidth="24.0"
         android:viewportHeight="24.0">
     <path
-        android:fillColor="#FF000000"
+        android:fillColor="?attr/standardVectorGraphic"
         android:pathData="M8.59,16.34l4.58,-4.59 -4.58,-4.59L10,5.75l6,6 -6,6z"/>
 </vector>
diff --git a/app/src/main/res/drawable/ic_launcher_foreground.xml b/app/src/main/res/drawable/ic_launcher_foreground.xml
index 4457f4c..f780f84 100644
--- a/app/src/main/res/drawable/ic_launcher_foreground.xml
+++ b/app/src/main/res/drawable/ic_launcher_foreground.xml
@@ -5,32 +5,32 @@
     android:viewportHeight="512">
   <path
       android:pathData="M174.65,41.63h13.43v429.87h-13.43z"
-      android:fillColor="#fff"/>
+      android:fillColor="?attr/lightestBackGround"/>
   <path
       android:pathData="M322.42,41.63h13.43v429.87h-13.43z"
-      android:fillColor="#fff"/>
+      android:fillColor="?attr/lightestBackGround"/>
   <path
       android:pathData="M40.31,337.17l0,-13.43l429.87,-0l0,13.43z"
-      android:fillColor="#fff"/>
+      android:fillColor="?attr/lightestBackGround"/>
   <path
       android:pathData="M40.31,189.4l0,-13.43l429.87,-0l0,13.43z"
-      android:fillColor="#fff"/>
+      android:fillColor="?attr/lightestBackGround"/>
   <path
       android:pathData="M94.05,68.49h40.3V55.06H94.05a26.87,26.87 0,0 0,0 53.73h13.43a13.44,13.44 0,1 1,0 26.87H67.18v13.43h40.3a26.87,26.87 0,0 0,0 -53.73H94.05a13.44,13.44 0,0 1,0 -26.87Z"
-      android:fillColor="#fff"/>
+      android:fillColor="?attr/lightestBackGround"/>
   <path
       android:pathData="M262,206.19h-40.3v94L262,300.19a26.86,26.86 0,0 0,26.86 -26.87v-40.3A26.86,26.86 0,0 0,262 206.19ZM262,286.79L235.1,286.79L235.1,219.62L262,219.62a13.43,13.43 0,0 1,13.43 13.43v40.3A13.43,13.43 0,0 1,262 286.79Z"
-      android:fillColor="#fff"/>
+      android:fillColor="?attr/lightestBackGround"/>
   <path
       android:pathData="M406.38,206.19L392.94,206.19a26.86,26.86 0,0 0,-26.86 26.86v40.3a26.86,26.86 0,0 0,26.86 26.87h13.44a26.87,26.87 0,0 0,26.86 -26.87v-40.3A26.87,26.87 0,0 0,406.38 206.19ZM419.81,273.35a13.48,13.48 0,0 1,-13.43 13.44L392.94,286.79a13.47,13.47 0,0 1,-13.43 -13.44v-40.3a13.47,13.47 0,0 1,13.43 -13.43h13.44a13.48,13.48 0,0 1,13.43 13.43Z"
-      android:fillColor="#fff"/>
+      android:fillColor="?attr/lightestBackGround"/>
   <path
       android:pathData="M134.35,374.01l0,0l0,0l0,0l0,-9.5l-9.36,0l-0.04,0.1l-0.1,-0.1l-37.91,37.91l-6.32,6.32l0,-12.56l0,-31.67l-13.44,0l0,19.82l0,17.34l0,20.51l0,17.64l0,18.72l13.44,0l0,-30.8l6.45,-6.45l37.78,37.25l0,0l9.5,0l0,-9.36l-37.85,-37.33l37.84,-37.84l0.01,0z"
-      android:fillColor="#fff"/>
+      android:fillColor="?attr/lightestBackGround"/>
   <path
       android:pathData="M275.4,58.42v60.45a20.15,20.15 0,1 1,-40.3 0V58.42H221.67v60.45a33.58,33.58 0,1 0,67.16 0V58.42Z"
-      android:fillColor="#fff"/>
+      android:fillColor="?attr/lightestBackGround"/>
   <path
       android:pathData="M275.4,364.51V425a20.15,20.15 0,1 1,-40.3 0V364.51H221.67V425a33.58,33.58 0,1 0,67.16 0V364.51Z"
-      android:fillColor="#fff"/>
+      android:fillColor="?attr/lightestBackGround"/>
 </vector>
diff --git a/app/src/main/res/drawable/ic_menu_about.xml b/app/src/main/res/drawable/ic_menu_about.xml
index 2851ab6..6c08f3d 100644
--- a/app/src/main/res/drawable/ic_menu_about.xml
+++ b/app/src/main/res/drawable/ic_menu_about.xml
@@ -4,6 +4,6 @@
     android:viewportWidth="24.0"
     android:viewportHeight="24.0">
     <path
-        android:fillColor="#FF000000"
+        android:fillColor="?attr/standardVectorGraphic"
         android:pathData="M11,17h2v-6h-2v6zM12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM12,20c-4.41,0 -8,-3.59 -8,-8s3.59,-8 8,-8 8,3.59 8,8 -3.59,8 -8,8zM11,9h2L13,7h-2v2z"/>
 </vector>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/ic_menu_daily_sudoku.xml b/app/src/main/res/drawable/ic_menu_daily_sudoku.xml
index 2239a4f..59db42b 100644
--- a/app/src/main/res/drawable/ic_menu_daily_sudoku.xml
+++ b/app/src/main/res/drawable/ic_menu_daily_sudoku.xml
@@ -4,6 +4,6 @@
         android:viewportWidth="24.0"
         android:viewportHeight="24.0">
     <path
-        android:fillColor="#FF000000"
+        android:fillColor="?attr/standardVectorGraphic"
         android:pathData="M11.99,2C6.47,2 2,6.48 2,12s4.47,10 9.99,10C17.52,22 22,17.52 22,12S17.52,2 11.99,2zM12,20c-4.42,0 -8,-3.58 -8,-8s3.58,-8 8,-8 8,3.58 8,8 -3.58,8 -8,8zM12.5,7H11v6l5.25,3.15 0.75,-1.23 -4.5,-2.67z"/>
 </vector>
diff --git a/app/src/main/res/drawable/ic_menu_help.xml b/app/src/main/res/drawable/ic_menu_help.xml
index 4148ec9..fdc9afa 100644
--- a/app/src/main/res/drawable/ic_menu_help.xml
+++ b/app/src/main/res/drawable/ic_menu_help.xml
@@ -4,6 +4,6 @@
     android:viewportWidth="24.0"
     android:viewportHeight="24.0">
     <path
-        android:fillColor="#FF000000"
+        android:fillColor="?attr/standardVectorGraphic"
         android:pathData="M11,18h2v-2h-2v2zM12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM12,20c-4.41,0 -8,-3.59 -8,-8s3.59,-8 8,-8 8,3.59 8,8 -3.59,8 -8,8zM12,6c-2.21,0 -4,1.79 -4,4h2c0,-1.1 0.9,-2 2,-2s2,0.9 2,2c0,2 -3,1.75 -3,5h2c0,-2.25 3,-2.5 3,-5 0,-2.21 -1.79,-4 -4,-4z"/>
 </vector>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/ic_menu_home.xml b/app/src/main/res/drawable/ic_menu_home.xml
index 5a425b4..2ea2788 100644
--- a/app/src/main/res/drawable/ic_menu_home.xml
+++ b/app/src/main/res/drawable/ic_menu_home.xml
@@ -4,6 +4,6 @@
     android:viewportWidth="24.0"
     android:viewportHeight="24.0">
     <path
-        android:fillColor="#FF000000"
+        android:fillColor="?attr/standardVectorGraphic"
         android:pathData="M10,20v-6h4v6h5v-8h3L12,3 2,12h3v8z"/>
 </vector>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/ic_menu_settings.xml b/app/src/main/res/drawable/ic_menu_settings.xml
index 8e4a68a..7715e5e 100644
--- a/app/src/main/res/drawable/ic_menu_settings.xml
+++ b/app/src/main/res/drawable/ic_menu_settings.xml
@@ -1,5 +1,6 @@
 <vector android:alpha="0.60" android:height="24dp"
     android:viewportHeight="24.0" android:viewportWidth="24.0"
     android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
-    <path android:fillColor="#FF000000" android:pathData="M19.43,12.98c0.04,-0.32 0.07,-0.64 0.07,-0.98s-0.03,-0.66 -0.07,-0.98l2.11,-1.65c0.19,-0.15 0.24,-0.42 0.12,-0.64l-2,-3.46c-0.12,-0.22 -0.39,-0.3 -0.61,-0.22l-2.49,1c-0.52,-0.4 -1.08,-0.73 -1.69,-0.98l-0.38,-2.65C14.46,2.18 14.25,2 14,2h-4c-0.25,0 -0.46,0.18 -0.49,0.42l-0.38,2.65c-0.61,0.25 -1.17,0.59 -1.69,0.98l-2.49,-1c-0.23,-0.09 -0.49,0 -0.61,0.22l-2,3.46c-0.13,0.22 -0.07,0.49 0.12,0.64l2.11,1.65c-0.04,0.32 -0.07,0.65 -0.07,0.98s0.03,0.66 0.07,0.98l-2.11,1.65c-0.19,0.15 -0.24,0.42 -0.12,0.64l2,3.46c0.12,0.22 0.39,0.3 0.61,0.22l2.49,-1c0.52,0.4 1.08,0.73 1.69,0.98l0.38,2.65c0.03,0.24 0.24,0.42 0.49,0.42h4c0.25,0 0.46,-0.18 0.49,-0.42l0.38,-2.65c0.61,-0.25 1.17,-0.59 1.69,-0.98l2.49,1c0.23,0.09 0.49,0 0.61,-0.22l2,-3.46c0.12,-0.22 0.07,-0.49 -0.12,-0.64l-2.11,-1.65zM12,15.5c-1.93,0 -3.5,-1.57 -3.5,-3.5s1.57,-3.5 3.5,-3.5 3.5,1.57 3.5,3.5 -1.57,3.5 -3.5,3.5z"/>
+    <path android:fillColor="?attr/standardVectorGraphic"
+          android:pathData="M19.43,12.98c0.04,-0.32 0.07,-0.64 0.07,-0.98s-0.03,-0.66 -0.07,-0.98l2.11,-1.65c0.19,-0.15 0.24,-0.42 0.12,-0.64l-2,-3.46c-0.12,-0.22 -0.39,-0.3 -0.61,-0.22l-2.49,1c-0.52,-0.4 -1.08,-0.73 -1.69,-0.98l-0.38,-2.65C14.46,2.18 14.25,2 14,2h-4c-0.25,0 -0.46,0.18 -0.49,0.42l-0.38,2.65c-0.61,0.25 -1.17,0.59 -1.69,0.98l-2.49,-1c-0.23,-0.09 -0.49,0 -0.61,0.22l-2,3.46c-0.13,0.22 -0.07,0.49 0.12,0.64l2.11,1.65c-0.04,0.32 -0.07,0.65 -0.07,0.98s0.03,0.66 0.07,0.98l-2.11,1.65c-0.19,0.15 -0.24,0.42 -0.12,0.64l2,3.46c0.12,0.22 0.39,0.3 0.61,0.22l2.49,-1c0.52,0.4 1.08,0.73 1.69,0.98l0.38,2.65c0.03,0.24 0.24,0.42 0.49,0.42h4c0.25,0 0.46,-0.18 0.49,-0.42l0.38,-2.65c0.61,-0.25 1.17,-0.59 1.69,-0.98l2.49,1c0.23,0.09 0.49,0 0.61,-0.22l2,-3.46c0.12,-0.22 0.07,-0.49 -0.12,-0.64l-2.11,-1.65zM12,15.5c-1.93,0 -3.5,-1.57 -3.5,-3.5s1.57,-3.5 3.5,-3.5 3.5,1.57 3.5,3.5 -1.57,3.5 -3.5,3.5z"/>
 </vector>
\ No newline at end of file