So I've made a lot more progress. Fixed a lot more bugs, went from ~36FPS to ~117FPS with optimizations. Of course now with the full screen color modifying, its back to ~27FPS (Yuck)
Added smooth preview fade in / out (looks really hot)
Fixed alignment for the preview and dice to the grid.
If you look at the bottom of the pics, you'll notice I added a bottom to the grid, next up is the random dice preview arrow at the bottom.
You'll also hopefully notice the very cool color differences between the screenshots. Its still running a little slow but I'm getting further toward my goal.
Added start to pause (instead of show/hide preview line)
L+R = show / hide preview line
Here are 3 teaser screenshots to show off the progress: