Ghost white is whiter than Pure white, (Mazda RX7 Spirit R/Subaru Impreza's) but Pure white is "clearer", best way I can think to describe it. They are very close. The RX7 Spirit R '02, and Subaru '09 share "Pure white", among possible other Subaru's and Mazda's. I initially thought they were different, but they went into the same slot in my colors. (I only have a single Pure White, despite buying multiple Mazda/Subaru's in Pure white) I couldn't find Ghost white yet, the search continues. (I have it, I just can't find it on a car) Noir etoile is definitely darker. The VW color is a very dark pearl color, but the Renault black is the blackest black I believe, and is visually darker than the VW pearl black. I also believe I found the brightest yellow, it's brighter than those listed in the OP, I have to check the name.