Change default PTR colors (#10174)

presentation-core/src/main/java/tachiyomi/presentation/core/components/material/PullRefresh.kt

@@ -4,6 +4,7 @@ import androidx.compose.animation.core.animate
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.pulltorefresh.PullToRefreshContainer
 import androidx.compose.material3.pulltorefresh.PullToRefreshState
 import androidx.compose.runtime.Composable
@@ -85,6 +86,8 @@ fun PullRefresh(
             modifier = Modifier
                 .align(Alignment.TopCenter)
                 .padding(contentPadding),
+            containerColor = MaterialTheme.colorScheme.surfaceVariant,
+            contentColor = MaterialTheme.colorScheme.onSurfaceVariant,
         )
     }
 }