Fire

I used to hate the main theme because I thought it was uneventful unlike the other schemes, and not to mention it'd make me think I was banned whenever I came to the site signed out. However, now it's been the one I've been using for the past three months as all the others are either bland or tacky. Ah how time changes things.

Grayscale

The iconic Main

Main.

I tried switching to other schemes before, but I keep ending up going back to main so I stuck with Main

Main > Grayscale > Ice Cold = Marine > the lessors

we need a google theme tbh. it would match my avi

Going by what people voted for when the admins asked which color schemes you used, I would have to say Grayscale.