wow thanks for your comments! we always try to aim for that cuteness (most of it thanks to Andres).
the color change of the bonsai was a last minute adititon (literally last minute xD) and KI think it is not really beautily implemented, I think it could blend a littel more with the rest of the UI, but I though that it was a must to have that mechanic, and i'm glad I finally implemented it :)
about the procedural generation, well, to be honest 100% I don't really know if I should call it "procedural as the definition of procedural" but "random with some rules" I have to go a bit deeper in the concept, so this is not yet a victory! but for you to have some "inspiration" my first idea was to implement LSystems, and for that I checked "The algorithmic beaty of plants" by Przemyslaw Prusinkiewicz. take a look because it's f***ing beautiful!!
thanks again!