Rainbow condition

[Kiote]

I've been unable to locate tests and information on orb colors, can lease point me in the right direction?

You do not need a test to confirm what the Colors do. Yoshida has already stated publicly:

White - Normal Success, Normal Quality
Red - Lower Success, Higher Quality
Yellow - Lowest Success, Highest Quality
Slow Rainbow - Higher Chance of Destabilizing
Fast Rainbow - Highest Chance of Destabilizing