pencil2d/pencil — pull request #210 by eVoLuTiVeMEDIA (2013-10-14 23:37:45+00:00)
Title: Colored onion skin + fixed a grid refresh issue

- Added UI toggle buttons to the display option section.
- There are 4 options for colors: normal (usual way), blue, red, bright indigo. I think there's no need to use
more colors because pure red & blue colors are optimally distinguishable from common pencil color (gray to black).
- Solved a grid issue: refresh wasn't applied to all frames.