As of now, there's a limit of (only) 8 colours. I don't see any reason why there would be such a pointless limit. Why limit creativity? Yes, I know "Skytitan" is eight letters, therefore there shouldn't really be a reason for more than 8 colours. HOWEVER, you can combine multiple colours to make smooth gradients/colour transitions that the traditional &c or &e cannot! Why could you possibly not support this?? It'll be cool.
you have jolol's benefit of the doubt. this is a pretty good idea mate, keep it up and you may get a high five.
I think including some of the legacy text options in general and msgs are a good idea such as italics, bold, and colour gradients. I feel gradients should also be fine for prefix and nickname colours too. Allow more creativity ✨
this would definitely be a nice thing, i was upset when i tested if the gradient works for /nick but it doesnt