From e80c699cc9c93454555abc78f0b0c9e5d6ae6dd1 Mon Sep 17 00:00:00 2001
From: Jason Simmons <jason-simmons@users.noreply.github.com>
Date: Thu, 19 Jul 2018 12:58:52 -0700
Subject: [PATCH] Keep the debug repaint rainbow color within a valid range
 (#19355)

Fixes https://github.com/flutter/flutter/issues/18971
---
 packages/flutter/lib/src/rendering/view.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/flutter/lib/src/rendering/view.dart b/packages/flutter/lib/src/rendering/view.dart
index bdc0a177a5..fbce210f02 100644
--- a/packages/flutter/lib/src/rendering/view.dart
+++ b/packages/flutter/lib/src/rendering/view.dart
@@ -200,7 +200,7 @@ class RenderView extends RenderObject with RenderObjectWithChildMixin<RenderBox>
       scene.dispose();
       assert(() {
         if (debugRepaintRainbowEnabled || debugRepaintTextRainbowEnabled)
-          debugCurrentRepaintColor = debugCurrentRepaintColor.withHue(debugCurrentRepaintColor.hue + 2.0);
+          debugCurrentRepaintColor = debugCurrentRepaintColor.withHue((debugCurrentRepaintColor.hue + 2.0) % 360.0);
         return true;
       }());
     } finally {