Just so ya know... the color scheme will look very different on different monitors. So make it look good, but be careful not to yak shav over colors only you will ever see as intended.
ditto. I've used just about every language and IDE out there. Eclipse and Java. C++ with every IDE out there. Javascript. Some niche languages. Everything.
Common Lisp and it's tooling is the best dev experience I've found. Other langs can support live coding, but it's always a poorly supported exotic option that feels like crap compared to SLIME.