When first applied, WW seems very white. Then as it ages, tends to get yellow-ish. It depends on the color you apply it to.
Use the Chevy white. IF anything, it gets chalk-i-er white over time and kind of flattens out gloss wise.
No one is going to ask you what color it is. If they do, tell them it is from Home Depot and you put in on with a roller. Show them Kopec's article with the materials list. The roller leaves a nice texture.