Best in Bags, color coding

On the Best in Bags results I see the item level in the first column. I find it odd that some item levels have different colors. Is there significance to the various colors assigned to the item level text?

Green means an item is warforged/titanforged, i.e. has an increased item level.
Purple shows that this item has a corruption effect.
The default color is white, which is for everything else.