Make selection colors more consistent throughout DevTools (#5352)

packages/devtools_app/lib/src/shared/ui/colors.dart

diff --git a/packages/devtools_app/lib/src/shared/ui/colors.dart b/packages/devtools_app/lib/src/shared/ui/colors.dart
index 4bb9810..b221271 100644
--- a/packages/devtools_app/lib/src/shared/ui/colors.dart
+++ b/packages/devtools_app/lib/src/shared/ui/colors.dart
@@ -45,7 +45,7 @@
 }
 
 const defaultSelectionForegroundColor = Colors.white;
-const defaultSelectionColor = Color(0xFF36C6F4);
+Color get defaultSelectionColor => devtoolsBlue[400]!;
 
 const searchMatchColor = Colors.yellow;
 final searchMatchColorOpaque = Colors.yellow.withOpacity(0.5);

packages/devtools_app/test/test_infra/goldens/timeline_flame_chart_with_selected_frame.png

diff --git a/packages/devtools_app/test/test_infra/goldens/timeline_flame_chart_with_selected_frame.png b/packages/devtools_app/test/test_infra/goldens/timeline_flame_chart_with_selected_frame.png
index 034f548..f105121 100644
--- a/packages/devtools_app/test/test_infra/goldens/timeline_flame_chart_with_selected_frame.png
+++ b/packages/devtools_app/test/test_infra/goldens/timeline_flame_chart_with_selected_frame.png
Binary files differ