Function coloring is orthogonal to async or not. I also greatly prefer function coloring, but I'm agnostic when it comes to either explicit async/await or sync

Function coloring is orthogonal to async or not. I also greatly prefer function coloring, but I'm agnostic when it comes to either explicit async/await or sync code in green threads. For example, Haskell has function coloring, but it also has Go-style lightweight threads and sync code. It's the nicest experience IMO.