pink velvet because it's easy on my eyes ; v ; I like the way the white text pops!
i use the pink one! simply because i think its the prettiest and goes best with the coding for one of my characters~
the default/blue theme! i like blue. i like the sleekness of the colour. but the pink one is very nice as well!
One of the pink themes, I set it ages ago and never looked back so I forget which one it is, but the pink with the white background. It's just nice.
Night theme since I like dark theme sites lol and I think the blue accent on night is a nicer blue than the day/regular one ^^;;;;
Night theme for no other reasons than it looks nice, though I do use Pink Velvet on my alt acc and started liking that too. :^D