This is an emerald theme which fits with Plane theme (dark version) (https://www.pling.com/p/1198768/)
Mac lookalike buttons are not really an exact and precise copy of Plane's, but look good enough for me.
I am not the author of Plane theme. Thank wfpaisa for it!

Changelog:
V 1: initial release
V 2: Added symbols in buttons. Tried to better emulate light bloom. Made set/unset above a lighter blue.