It's actually not synchronized, I just manually set the colors to match up with the Thermaltake AIO which I set using the desktop software. Hopefully someone with more RGB knowledge than I have might be able to help you :)
No delid yet. With the 5 ghz overclock (which I don't usually run for noise and power reasons) under a full synthetic load it'll top out at around mid to high 80s. Definitely hot, and I'm using a 280mm AIO. The silicon on my chip is perfectly capable of achieving 5 or a little more but is thermally limited by the stock toothpaste.
Manage to overclock your 8700k with the H80i?