Assuming your shower is/was in the colder months, what did/what will you wear?

I don't want to buy any more clothes at this point, and my best options are either black skinny jeans or a black knit dress...I could do a colorful scarf and fun flats with either, but is it bad to wear black to my shower? Do I get a pass since it's winter? I'd really prefer to wear the jeans since my legs are pasty white...is it bad to wear jeans to my shower? I have this vision in my head of a flowery, bright colored dress, but that seems silly for January. *ETA* The venue is my cousin's house so it's not the fanciest of affairs, but I don't think it will be super casual, either.