No, the OP is correct. You're right that <red> is a valid CSS color keyword, but <”red”> is not. Because of this, the CSS spec treats it as a "legacy color valu

No, the OP is correct. You're right that <red> is a valid CSS color keyword, but <”red”> is not. Because of this, the CSS spec treats it as a "legacy color value" and attempts to interpret it as a string of characters (including the quotes) rather than a keyword.