Out of the red metal, blue metal and darkness, what's your preference (and what should be default?)

Personally, I'm sold on Darkness, which I had expected to come out as more of a niche theme.

i am a fan of the blue with no sidebar.  just me tho.

Sidebar and with a tool to edit you own colours

I agree with CK, Darkness should be default. I used it for a long time until I had to us RPNew in order to navigate the site on my phone. But my favorite is Blue Metal, please make it for Sidebar

Red metal here, without that lame sidebar.

Blue Metal should definitely be Default.  & no sidebar ofc