BUR #34897 is pending approval.
mass update multicolored_clothes -> -multicolored_coat -multicolored_bikini -multicolored_thighhighs -multicolored_bodysuit -multicolored_dress -multicolored_gloves -multicolored_hoodie -multicolored_jacket -multicolored_scarf -multicolored_kimono -multicolored_pajamas -multicolored_panties -multicolored_shorts -multicolored_skirt -multicolored_sweater -multicolored_swimsuit -multicolored_cape -multicolored_necktie -multicolored_legwear -multicolored_headwear -multicolored_bow -multicolored_hat
deprecate multicolored_clothes
I think the biggest factor against this should be the fact that the wiki for multicolored_clothes specifically says not to use it with patterns like plaid and argyle and yet the wiki uses these patterns as example pictures.
Ignoring that though this tag is incredibly unspecific and I can't see a single reason to use this in place of a tag like multicolored shirt or even any of the two-tone tags.
Another concern is that the wiki states that Black, White, and Grey should not be included in the tag and yet a large sample size of the post contains white, black, and grey colors as part of the "multicolored" tag. I find the tag overly broad, and attempts to "limit" what the tag contains are ineffective.
Updated