Simple yet deceptively complex game with a satisfying core loop and simple mechanics, really enjoyed it!
If you ever plan on making a more fully featured version of this I have some suggestions:
1) A grid would make it easier to see how many spaces are left, rather than trying to judge by distance.
2) A bonus for filling a whole row or column with a specific colour would be nice, and add a bit of extra strategy.
3) Maybe one grace day of being in the negatives? Feels bad to lose by a dollar or two in the early game.
Thanks for sharing, hope this places well in the GGJ!