diff --git a/lib/screens/issues.dart b/lib/screens/issues.dart
index 7d4f255..1318e9a 100644
--- a/lib/screens/issues.dart
+++ b/lib/screens/issues.dart
@@ -133,7 +133,7 @@ class IssuesScreen extends StatelessWidget {
                                 label['name'],
                                 style: TextStyle(
                                   fontSize: 12,
-                                  color: PrimerColors.gray900, // FIXME:
+                                  color: getFontColorByBrightness(color),
                                   fontWeight: FontWeight.w600,
                                 ),
                               ),
diff --git a/lib/utils/utils.dart b/lib/utils/utils.dart
index 2bdf9eb..b4e76c1 100644
--- a/lib/utils/utils.dart
+++ b/lib/utils/utils.dart
@@ -28,6 +28,14 @@ Color convertColor(String cssHex) {
   return Color(int.parse('ff' + cssHex, radix: 16));
 }
 
+Color getFontColorByBrightness(Color color) {
+  var grayscale = color.red * 0.3 + color.green * 0.59 + color.blue * 0.11;
+  // print('color: $color, $grayscale');
+
+  var showWhite = grayscale < 128;
+  return showWhite ? Colors.white : Colors.black;
+}
+
 void nextTick(Function callback, [int milliseconds = 0]) {
   // FIXME:
   Future.delayed(Duration(milliseconds: 0)).then((_) {
diff --git a/lib/widgets/timeline_item.dart b/lib/widgets/timeline_item.dart
index 7e6a5ea..d577a18 100644
--- a/lib/widgets/timeline_item.dart
+++ b/lib/widgets/timeline_item.dart
@@ -61,19 +61,13 @@ class TimelineItem extends StatelessWidget {
   }
 
   TextSpan _buildLabel(item) {
+    // FIXME:
     var color = convertColor(item['label']['color']);
-    var grayscale = color.red * 0.3 + color.green * 0.59 + color.blue * 0.11;
-    // print('color: $color, $grayscale');
-
-    var showWhite = grayscale < 128;
-    var textColor = showWhite ? Colors.white : Colors.black;
-
     return TextSpan(
       text: item['label']['name'],
       style: TextStyle(
-        color: textColor,
-        // https://github.com/flutter/flutter/issues/20430
-        background: Paint()..color = color,
+        color: getFontColorByBrightness(color),
+        backgroundColor: color,
         // https://stackoverflow.com/a/52592679
         // ..strokeWidth = 16.5
         // ..style = PaintingStyle.stroke