Adding a raster level, and use the brush, some colors are inverted:
https://dl.dropboxusercontent.com/u/69554201/OpentoonzLinuxWrongColorsBug.mp4
@ideasman42 might know whats causing it :)
Fixed 83caeb2eb52d65e96f6f33706eecddeb6e24ed23
@ideasman42 that was fast! Thank you for the fix :)
There are two more linux related bugs - but they might not be as simple as this one
https://github.com/opentoonz/opentoonz/issues?q=is%3Aissue+is%3Aopen+label%3ALinux
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Fixed 83caeb2eb52d65e96f6f33706eecddeb6e24ed23