I think it should also be possible to click on a marble space in your potions and then that marble space is automatically filled. Only exception: Prismatic Joy. That one should keep programmed as it is now, although one enhancement can be made: once you don't have any marbles left in your pool, you shouldn't have to click "finish moving ingredients".
Another suggestion: when you have > 3 same coloured marbles left, you shouldn't have to manually fill your pool: this could also be automated.
Another suggestion: when you have > 3 same coloured marbles left, you shouldn't have to manually fill your pool: this could also be automated.