Ideally, the color needs to be set by CSS and the same goes for size.

For example, I want to create a spinner that shows inline next to the explanatory text. Because I can only specify the spnner's height through the height prop, I lose control of the spinner's appearance if I ever apply different CSS. This is a maintenance nightmare.

The same goes for color: If I want the text and spinner to have the same color, I have to keep on duplicating the color entry in the CSS and the color prop.

I see open issues since up to 5 years ago. Is it safe to assume that my complaint will go unheard? Hopefully not, but I won't wait standing.