You could also do this with vanilla JavaScript using Element.classList. No need for using a regular expression either:
function removeColorClasses(element)
{
for (let className of Array.from(element.classList))
if (className.startsWith("color-"))
element.classList.remove(className);
}
Note: Notice that we create an Array
copy of the classList
before starting, that's important since classList
is a live DomTokenList
which will update as classes are removed.