Wow, It has been 8 months since my last post and I thought this thread was dead...
It's a good idea, Steven. Almost a year after Quantum was deployed, I am *still* using my option #2 in the post above yours, FF 56.0.2 with CT 31.2.0. I am unwilling to live without ColorfulTools, and I am unwilling to live without multi-process FF, but I seem to be doing just fine without the rest of Quantum. (I've got the best-looking FF on my block!)
I would consider donating to an effort to get CT working on Waterfox if it would support multi-process, if only so I could get the many security updates that have been released since I froze my versions.
Best regards,
Andy