feat: added color preview on card edit page

mobile/src/main/java/ru/omni_devel/cards/EditCardActivity.kt

@@ -46,6 +46,7 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
+import androidx.core.graphics.toColorInt
 import com.google.zxing.BarcodeFormat
 import com.journeyapps.barcodescanner.ScanContract
 import com.journeyapps.barcodescanner.ScanOptions
@@ -96,6 +97,11 @@ fun CardEditable(
 
     val fieldModifier = Modifier.fillMaxWidth()
 
+    val cardColor = if (color == null)
+        MaterialTheme.colorScheme.primary
+    else
+        Color(color.toColorInt())
+
     val scanLauncher = rememberLauncherForActivityResult(
         contract = ScanContract()
     ) { result ->
@@ -267,7 +273,7 @@ fun CardEditable(
             verticalAlignment = Alignment.CenterVertically,
             horizontalArrangement = Arrangement.spacedBy(8.dp)
         ) {
-            CardIcon(if (icon == null) null else base64ToImageBitmap(icon), MaterialTheme.colorScheme.primary)
+            CardIcon(if (icon == null) null else base64ToImageBitmap(icon), cardColor)
 
             Text(stringResource(R.string.do_select_icon))
         }