Might be. I was replying to the "it's hard not to fall in love with the ultra fast feedback loop and well defined colour palette." part where I get the impression they like that they don't have to define their own color palette and just use the one provided.
Oh, maybe it wasn't clear then, you can use the default colour palette, and then gradually swap out the built-in class names with the colours you want them to actually map to, or create your own custom colour class names as well.
At the very least it should save a step or two compared to building the design system out yourself in a new project