blow off nonsense claims about color of ab axes

Author: svgeesus

css-color-4/Overview.bs

@@ -1691,10 +1691,12 @@ Specifying Lab and LCH: the lab() and lch() functional notations</h3>
 	The third argument is the hue.
 	It's interpreted identically to the <<hue>> argument of ''hsl()'',
 	but doesn't map hues to angles in the same way.
-	Instead, ''0deg'' represents red (pointing along the positive "a" axis),
-	''90deg'' represents yellow (the positive "b" axis),
-	''180deg'' represents green (the negative "a" axis),
-	and ''270deg'' represents blue (the negative "b" axis).
+	Instead, ''0deg'' points along the positive "a" axis,
+	''90deg'' points along the positive "b" axis,
+	''180deg'' points along the negative "a" axis,
+	and ''270deg'' points along the negative "b" axis.
+
+	<!-- add diagram showing hue angles in LCH for RGB primaries and secondaries in sRGB, P3, and Rec.2020 -->
 
 	There is an optional fourth alpha value,
 	separated by a slash,