diff --git a/core/src/main/java/org/kiwix/kiwixmobile/core/error/ErrorActivityScreen.kt b/core/src/main/java/org/kiwix/kiwixmobile/core/error/ErrorActivityScreen.kt
index 4557a7c1d..33458c7ce 100644
--- a/core/src/main/java/org/kiwix/kiwixmobile/core/error/ErrorActivityScreen.kt
+++ b/core/src/main/java/org/kiwix/kiwixmobile/core/error/ErrorActivityScreen.kt
@@ -41,7 +41,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.ImageBitmap
 import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.res.colorResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextAlign
 import com.tonyodev.fetch2.R.string
@@ -49,6 +48,9 @@ import org.kiwix.kiwixmobile.core.R
 import org.kiwix.kiwixmobile.core.extensions.loadBitmapFromMipmap
 import org.kiwix.kiwixmobile.core.ui.components.CrashCheckBox
 import org.kiwix.kiwixmobile.core.ui.components.KiwixButton
+import org.kiwix.kiwixmobile.core.ui.theme.AlabasterWhite
+import org.kiwix.kiwixmobile.core.ui.theme.ErrorActivityBackground
+import org.kiwix.kiwixmobile.core.ui.theme.White
 import org.kiwix.kiwixmobile.core.utils.ComposeDimens.CRASH_IMAGE_SIZE
 import org.kiwix.kiwixmobile.core.utils.ComposeDimens.EIGHT_DP
 import org.kiwix.kiwixmobile.core.utils.ComposeDimens.SEVENTEEN_DP
@@ -67,7 +69,7 @@ fun ErrorActivityScreen(
   Column(
     modifier = Modifier
       .fillMaxSize()
-      .background(colorResource(id = R.color.error_activity_background))
+      .background(ErrorActivityBackground)
       .systemBarsPadding()
       .imePadding()
       .padding(SIXTEEN_DP),
@@ -76,7 +78,7 @@ fun ErrorActivityScreen(
     Text(
       text = stringResource(crashTitleStringId),
       style = MaterialTheme.typography.headlineSmall,
-      color = colorResource(id = R.color.alabaster_white),
+      color = AlabasterWhite,
       modifier = Modifier.padding(top = SIXTY_DP, start = EIGHT_DP, end = EIGHT_DP)
     )
 
@@ -92,7 +94,7 @@ fun ErrorActivityScreen(
       text = stringResource(messageStringId),
       style = MaterialTheme.typography.bodyMedium,
       textAlign = TextAlign.Center,
-      color = colorResource(id = R.color.white),
+      color = White,
       modifier = Modifier.padding(start = EIGHT_DP, top = EIGHT_DP, end = EIGHT_DP)
     )
 
diff --git a/core/src/main/java/org/kiwix/kiwixmobile/core/ui/components/CrashCheckBox.kt b/core/src/main/java/org/kiwix/kiwixmobile/core/ui/components/CrashCheckBox.kt
index e7cfd0c7b..52906b598 100644
--- a/core/src/main/java/org/kiwix/kiwixmobile/core/ui/components/CrashCheckBox.kt
+++ b/core/src/main/java/org/kiwix/kiwixmobile/core/ui/components/CrashCheckBox.kt
@@ -29,9 +29,10 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.MutableState
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.res.colorResource
 import androidx.compose.ui.res.stringResource
-import org.kiwix.kiwixmobile.core.R
+import org.kiwix.kiwixmobile.core.ui.theme.DenimBlue200
+import org.kiwix.kiwixmobile.core.ui.theme.ErrorActivityBackground
+import org.kiwix.kiwixmobile.core.ui.theme.White
 import org.kiwix.kiwixmobile.core.utils.ComposeDimens.CRASH_CHECKBOX_START_PADDING
 import org.kiwix.kiwixmobile.core.utils.ComposeDimens.CRASH_CHECKBOX_TOP_PADDING
 
@@ -47,15 +48,15 @@ fun CrashCheckBox(checkBoxItem: Pair<Int, MutableState<Boolean>>) {
       checked = checkBoxItem.second.value,
       onCheckedChange = { checkBoxItem.second.value = it },
       colors = CheckboxDefaults.colors(
-        checkedColor = colorResource(id = R.color.denim_blue200),
-        checkmarkColor = colorResource(id = R.color.error_activity_background),
-        uncheckedColor = colorResource(R.color.denim_blue200)
+        checkedColor = DenimBlue200,
+        checkmarkColor = ErrorActivityBackground,
+        uncheckedColor = DenimBlue200
       )
     )
     Text(
       style = MaterialTheme.typography.bodyMedium,
       text = stringResource(id = checkBoxItem.first),
-      color = colorResource(id = R.color.white),
+      color = White,
       modifier = Modifier.padding(start = CRASH_CHECKBOX_TOP_PADDING)
     )
   }
diff --git a/core/src/main/java/org/kiwix/kiwixmobile/core/ui/components/KiwixButton.kt b/core/src/main/java/org/kiwix/kiwixmobile/core/ui/components/KiwixButton.kt
index 2aa511a42..c9f5b4229 100644
--- a/core/src/main/java/org/kiwix/kiwixmobile/core/ui/components/KiwixButton.kt
+++ b/core/src/main/java/org/kiwix/kiwixmobile/core/ui/components/KiwixButton.kt
@@ -26,10 +26,9 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.res.colorResource
 import androidx.compose.ui.res.stringResource
-import org.kiwix.kiwixmobile.core.R
+import org.kiwix.kiwixmobile.core.ui.theme.DenimBlue800
+import org.kiwix.kiwixmobile.core.ui.theme.White
 import org.kiwix.kiwixmobile.core.utils.ComposeDimens.BUTTON_DEFAULT_ELEVATION
 import org.kiwix.kiwixmobile.core.utils.ComposeDimens.BUTTON_DEFAULT_PADDING
 import org.kiwix.kiwixmobile.core.utils.ComposeDimens.BUTTON_PRESSED_ELEVATION
@@ -46,8 +45,8 @@ fun KiwixButton(
   Button(
     onClick = { clickListener.invoke() },
     colors = ButtonDefaults.buttonColors(
-      containerColor = colorResource(id = R.color.denim_blue800),
-      contentColor = Color.White
+      containerColor = DenimBlue800,
+      contentColor = White
     ),
     modifier = Modifier.padding(BUTTON_DEFAULT_PADDING),
     shape = MaterialTheme.shapes.extraSmall,