I know it's late in the game to post another Electro movie custom, but I did this back when the movie was out, but never posted it as didn't see the point. I have a whole cache of figs that I haven't uploaded yet that either people did a similar thing to me before I had a chance to post it, or I think it's not worth my 2 customs per 24 hours upload availability. Anyway:
I just repainted the character, tried many times to get the lightening bolt painted on his arms and gave up after many fails, but what I did do was attach lightning from Star Wars accessories and attach it to his electricity 'ports' or w.e those things are. I tried to get a more rubbery look for his suit also and did a repaint of his eyes and the teeth with a gap for that Max Dillon look.