I'd have to see one in person to decide. I get where you're coming from, but if it didn't match the body exactly, it'd look worse.
I think if it matched the rest of the hardware it'd work, but a painted pickguard isn't the best idea I've ever had. Black anodized aluminum might look decent, but then the pickup rings and bridge would need to be the same IMO.
Oh well, it's a fairly sharp looking instrument as-is, and would look even sharper as a 4003S. I'm kinda surprised they didn't spring for black screws too.