The word 颜色 (yánsè / colour; facial expression/looks) is clearly related to several chengyu:
I suspect that many two-character words AB are similar to 颜色, in that there are several chengyu of the form "-A-B". I had a quick look and only noticed 情理 (通情达理，合情合理，揣情度理…).
We could call words like 颜色 and 情理 "potent" (or "chengyu-potent"). I have few questions related to this topic.
Are there any resources about such "potent" words? Is there a term in Chinese for such words?
One could in theory extract a list of potent words from any list of two-character words together with a chengyu dictionary. Which HSK 1, 2, … 6 words are potent?
At the moment I can't think of any interesting examples AB where there are "A-B-" -related chengyu (a different sort of chengyu-potent word). Are there any?