Can I suggest a galaxy potion? this could have a few potions for multiple colors. because galaxy has purple pink etc. i think this would be so cool

there is already a galactic color. it's not exactly like the current trendy galaxy aesthetic, but it wouldn't really make sense to have another color that's so similar in concept.

there's also the experiment 1550 that has an aesthetic closer to what you're describing.

oh i was thinking something different then that

This is too similar to galactic so I doubt it will become a potion and a whole color. You can always use a galactic pet with a overlay if you want something specific. c: