The reason I signed up was mostly to see how valid aesthetic preferences are as a way to judge type, so before anyon types me, here are pictures from my digital art collection (some of which are newly added but in the same style). A lot of it probably isn't super "highbrow" art but frankly I find a lot of what is supposed to be super artsy and sophisticated to be ugly and offputting and make me feel uncomfortable (like all the popular abstract, cubist, and surreal stuff) or boring (like bowls of fruit, why do I care about a bowl of fruit sitting on a table even). I could probably find more "highbrow" art that I liked but I haven't had that kind of education or upbringing really.
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Also, if this matters, my musical preferences are a lot wider than my artistic preferences, pretty much to the point of being absurd. My favorite is opera and art songs (basically all of it too, although I really have a thing for Wagner, which I hope doesn't offend people), but I also like "regular" classical music (mostly loud symphonic stuff like Mahler and Beethoven, I'm not really into Chopin piano, although string instrument music I like decently if not as much as sung music), metal, some world/folk music (Caucasian has been my favorite so far), the other kind of folk music, and some musical music (like stuff from the Sound of Music or My Fair Lady). A lot of times I'll just like music played in certain social contexts (like dances or parties) if I would have otherwise been indifferent to it or even somewhat dislike it.
As for colors, I usually consider myself not to have a favorite color since they can all look pretty in the right context and ugly in the wrong one, but if I had to pick, red, purple, black, and gold (like shiny gold) are the ones I use the most, and about equally, for wearing or getting various items in, then I find all the colors besides blue (even mustard yellow and unpopular colors like that) generally mildly pleasing and blue just really tepid and flat without a good context.