Umm, thats a completely different type of white item.
These white items have "white" item names (normal item titles), even though they have modifiers. They were created in an item editor and imported into bnet during the bug.
the white items YOURE thinking of are the ones on open bnet where the items are physically turned white (they have the swordguard white code edited into them). You can easily turn them any color. For instance, if you code in the pus spitter codes, the item will turn green.