You might remember the meaning of the character 彩 with this easy mnemonic:
I have a variety of plants in my garden, some have flowers shaped like claws (爪), some look like tiny trees (木), but it's hard to distinguish (釆) the poisonous ones. I just try to avoid plans with bristles (彡).
Using mnemonics to remember the meaning of Chinese characters like has a huge impact on how long to learn Mandarin it takes.