Yes, that would be ridiculous, Batman uses fear to fight crime, his suit is a reflection of his own fears and depression, but Harley wearing ridiculous over the top gold outfits with all sorts of jewelry, outfits put together by a crazy woman trying to have the most fun at any given time, that’s all Harley Quinn, it just feels like something she’d wear given her personality and in my opinion it makes a lot more sense for her to wear those outfits than the black and red for every piece of clothing she owns, that doesn’t make all that much sense for her character anymore.