Bored of the same tan all the time. Gas giants need some color, man! I also think it'd be cool for some of them to have floating cities you can visit. Someone else mentioned mining some gases for fuel as well. It just seems like a waste to have all those gassy planets just sitting there.
I don't know if such suggestion has been mentioned on this forum or not, but i can post comment here that i really support the idea all the gas giants in Starbound look the same, and there should be wider variety of them. Like in our Solar System, all gas giants look different and have different colour. Jupiter - brown-many shades of brown, Neptune - deep blue etc...