I have asked several women about their outfits or parts of them before with very little odd or negative reaction, while both in drab and femme. I think the few negative ones was because I was not known to them. Positive reactions have always out numbered the others.
With how things are going today though, and what part of the country you live in, complementing a member of the ‘woke’ mob could land in a very embarrassing situation or even accused of sexual harrassment. Be careful.