update color management for color shaders

Change-Id: I4d85ad9d02576dbdb9c50f38418b5e96ba6d4164
Reviewed-on: https://skia-review.googlesource.com/141042
Commit-Queue: Mike Klein <mtklein@chromium.org>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@chromium.org>
Reviewed-by: Brian Osman <brianosman@google.com>
2 files changed