Sure, but then it'd be exponentially more tiles. Or just a palette swap if it's a seasonal thing =P

My goal was to create a system to have similar looking but slightly varied trees; to make a consistent forest that still feels natural instead of cut and pasted sprites. Which kind of worked but not quite as good as hoped.

Clever system, but the difference between the trees is not so big yet. Using different colors would probably make a bigger visual difference between combinations!