Improvement/suggestion: addAlpha is a hook, but doesn't use hook conventional name

[Taffr]

addAlpha appears to be regular function which takes a color and returns a color with a certain amount of alpha added to it.

However since this appear to be just a pure function it easy to make mistakes which would violate the rules of hooks. https://react.dev/warnings/invalid-hook-call-warning since we might conditionally do different colors for example.

Suggestion: change name to be useAddAlpha to make it more obvious that is indeed a hook.