LMMS/lmms — pull request #567 by diizy (2014-04-05 12:09:05+00:00)
Title: Track: make the song editor background CSS-stylable with qproperties

Allows linear gradients for the track background. Both darker/lighter squares can be set separately with 3 user-definable colours. The gradient midpoint can also be set.

I think this is probably the best compromise between simplicity and flexibility.