[css-color-5] arithmetic!

Author: svgeesus

css-color-5/Overview.bs

@@ -804,12 +804,12 @@ is divided by the interpolated alpha value.
 	they would first be converted to premultiplied form
 	[9.6% 4.8% 39.2% ]
 	and
-	[37.2% 16.6% 38.4%]
+	[37.2% 15.6% 38.4%]
 	before interpolation.
 	The midpoint of linearly interpolating these colors
-	would be [23.4% 10.7% 38.8%]
+	would be [23.4% 10.2% 38.8%]
 	which, with an alpha value of 0.5,
-	is <span class="swatch" style="--color: rgb(46.8%, 21.4%, 77.6%, 0.5)"></span> rgb(46.8% 21.4% 77.6% / 0.5)
+	is <span class="swatch" style="--color: rgb(46.8%, 21.4%, 77.6%, 0.5)"></span> rgb(46.8% 20.4% 77.6% / 0.5)
 	when premultiplication is undone.
 </div>