Took me a while to figure out what the currency was, since the yellow circle at the top fills quite slowly. With the upgrades, even after playing for about 20 minutes I still sometimes wasn't quite sure if I could afford something. Like I'm upgraded auto-looper precision to level 2, and I think I've got enough blue, yellow, and red, but it won't give me the upgrade, so I guess I'm not quite there yet. (I got it a few minutes later.)
I love the auto-drawing things, I enjoyed how terrible they are drawing at first.
I played for about 30 minutes and had not yet reached the pink circle part of the currency. I think it could have been little shorter since it's a game jam game. :) It could be a fun thing to play on a mobile touchscreen. It's nice, it's calm (good choice of music), it makes me want to see what the upgrades do. They're not my genre but I think it's a pretty good incremental game.
Also it's technically impressive. I have no idea how I would go about making something like this!