Usefulness of ambiguous color liquid tags

The tags ambiguous purple liquid, ambiguous orange liquid, ambiguous blue liquid, ambiguous green liquid, and ambiguous pink liquid are all varying degrees of populated, but I'm not sure how useful they are.

It seems to be a mix of "this liquid is possibly blood or sexual fluids, but colored" and "this is a colored liquid", and there's no wikis for any of these tags to actually describe what the tags are for.

Ambiguous white liquid is aliased to suggestive fluid for a clear reason and ambiguous red liquid is useful for depictions of maybe-blood, but considering the lack of meaningful green liquids these tags seem like they need some narrowing down or possibly removal.

Ambiguous yellow liquid also exists but is possibly more useful than the other five? The images mostly seem to just be yellow liquids with no indication of what they are (literal tag name, but also would just fall under yellow liquid)

maybe these, except ambiguous red liquid, could be folded into some kind of ambiguous liquid umbrella tag? there's no reason to separate them by color, but also there's ambiguous liquids that aren't red or white.

though i will admit that upon close inspection a lot of these aren't ambiguous liquids so much as they are just colored liquids. the ambiguity in a red/white liquid makes sense because of the obvious connotations with bodily fluids, but you'd be hard pressed to come up with a similar connotation for a blue liquid, unless we're talking about like, sci-fi alien bug blood or something.

ambiguous colored liquid tags feel unnecessary. if it was already clear what the liquid was, wouldnt it already just be tagged with what the liquid is?

by not tagging what the liquid is and only its color, it feels like it logically implies a sort of ambiguity. at least thats how im thinking of it rn