Based on Alphacube metacity theme.
Color of titlebar blends in with window background to present a smooth look. Buttons are always colored, and glyphs appear on hover.
I'm very open to design suggestions, thanks!
Colors are same as Mac colors (yellow is minimize, green is maximize, red is close). Glyphs appear on hover.
Possible future ideas needs suggestions/opinions:
Gray out buttons on inactive windows
More spacing between buttons
Different button highlight on inactive windows