I have 2 different light-up sprites. One MIB, and one OOP.
MIB has a full smile and stripes on his arms brownish paint for dark details and more gloss to his paint. The OOP has a sideways smile and no stripes on arms, has black paint for dark details and no special markings. I checked http://www.80stoysale.com/newrainbow.html as there are many pics to compare him to.
None look like this one:
