LOL @ the bright green on black terminal pictures. How shall I say it, it feels very "l33t". Too bad they didn't use more normal terminal colours, it would improve readability IMO.
It's pretty normal and expected for those of us that spent significant time on an actual VT220 or similar. Maybe the choice was just driven by someone similar.
Personally, I think this is a huge deal because I'm still miffed about "flat design" and the deprecation of skeuomorphism.. except in a situations like this, where it brings nothing but ugly to the table. That's just adding insult to injury.