I wish I could read the original WWD article but I am not paying for that. Does anyone have a WWD subscription? I did find this info from a style.com article but I don't know how accurate it is.
"In addition to the
“dirty” lilac (Ultramarine Pink), beige (Light English Red), and crimson (Carmine Rouge) bullets, the range will include a bronzing powder, cream color base, buffer brush, eyeshadow, liner, Chromagraphic pencil, and lip gloss—all housed in weighty gold packaging inspired by his mother’s compacts."
http://www.style.com/beauty/people/2014/prabal-gurung-for-mac-cosmetics
So these might possibly maybe be the lipstick names. I'm not for sure though. They sound kind of off. Like the color descriptions match the promo image but that doesn't explain the berry lipstick we've seen which I would definitely not describe as dirty lilac.