It sucks not being able to know whether a remembered fountain is yellow or red, or knowing just what kind of potion you didn't pick up the first time you saw, and it's a minor irritant about the same for , features, and just what flavor of i your mage saw.
Potion colors have barely any logic to them, and since there's no way to customize them, I'm getting quite miffed at being unable to remember the inversions by heart still. I'm going to pull my hair out if I try to duplicate dissolutions again. In the same vein, on the map, potions of death and absorption are nearly indistinguishable from each other without a basepoint.
After a bit of checking, you're so close to having a nice additive color wheel, just make absorption purple, maybe push inversion up to a hot pink.