timeline display issue Yosemite

finally updated to yosemite. Looks at these check marks for the elements. They are one shade darker than white. This is frustrating. how can i fix this

Screen Shot 2015-07-21 at 12.36.39 PM.png

Which version of Toon Boom Studio?
The one supports is 8.1 and the latest patch fixed this issue for Yosemite, I believe.