You just seriously puzzled the heck out of me.
What is more important to you: performance or color options?
I ask; because if you seek maximum performance potential and string longevity; than why would you even be concerned about a 'lack of string color choices in cotton string?
And since you have become aware of the potential and or inevitable shortcomings of using poly string; why can’t you just use whatever poly color string you want and just change it often(before it breaks)?
… performance trumps color choices… all day long🤓
I happen to like poly strings with my fixed axle yoyos. But then again; I don’t hesitate to change strings in a heartbeat if I see or feel something ‘funny’ during play.
… Fixed axle 2A; I always use either 50/50 or cotton. Never full poly.
You want to see a yoyo go flying? Crank up some 2A on No-Jives with poly string.