Do you want to know how the CSS WG works? Fantasai has written about:csswg, An Inside View of the CSS Working Group at W3C.
currentColorkeyword, which computes on the element specified and then inherits, instead of inheriting as a keyword and then recomputing on each element. This is okay for non-inheriting properties like
border-color, but doesn’t work for properties that inherit, like
text-emphasis-color. (It effectively defaults the property to the
colorof the root element.) Tab to investigate whether SVG depends on this behavior or if we can change it.