UI theme

[yurtaev]

[tannermares]

+1

[tannermares]

@yurtaev Thanks so much for getting this started. I love the one-dark theme, I had no idea it was being worked on. What's left to get ruby syntax all matched up?

[nmaggioni]

+:100:

[nerdpad]

+1

[tillkruss]

+1

[maks-rafalko]

+1

[brunowego]

+1

[cdanyl]

+1

[stevespringett]

+1

[MonliH]

+1

[samiashi]

+1