The irreplaceable Trent Foster has kindly scanned four images from the pastel-colored editions of the Giants-Drow modules, which I now post here:This is a nice Sutherland piece that shows the Drow and their pack lizards, something that doesn't get illustrated very often for some reason.
Here's another example of "white Drow" and the likely model for the Jeff Dee (?) illustration that appears in the later printings of the module.
This is a rare Dave Trampier illustration of the Drow, although they aren't recognizably dark elves in my opinion. Only the bucklers give them away.
This is a rather well-done DCS piece showing a collection of Drow warriors, using both hand crossbows and atlatls. I like it a great deal, since the blackness of the Drow's skin is made very clear here and it's quite unsettling.
On the subject of the "white Drow," I wonder if perhaps, early in their conception, the Drow were, like many subterranean creatures, assumed to be albino or at least very pale in their skin color. That would make sense and would be another connection to Elric. I know that when I re-imagined the Drow in the late 80s for my home campaign, I made them a race of ghostly, albino elves because I thought it "made more sense." I have no support for this theory, but I do wonder if there might not be some truth to it.