His cutie mark contains two lightning bolts going in a circle with the Wardenclyffe Tower behind them. This was supposed to symbolize his great success' and contribution to science as well as his grand dreams that never came to fruition (the lightning bolts representing alternating current and the tower was one of his projects that ran out of money before its completion).
Here you can find a version without the accessories (Tesla coil, cloud etc) and here's one without the clothes.
Thanks to everyone who suggested him!
PSD file. As explained in my profile, you are free to use this image for any purpose:
And of course, today is also the body color of Twittermites, I bet he founded the bug except he forgot to trademark or patent the name of the bug he founded in his workshop. And some other ponies founded the Twittermite name.
*pumps fist in air*
That's pretty cool.
I made my own aswell (see icon lol )
"Rule 85: If it exists, there is a pony of it. No exceptions."
It's funny how one can always find Pony stuff, even when searching for formerly obscure scientists.
Also, if you'd like know, Tesla's eyes were grey-blue, which was unusual for a Serb. He claimed it was because his constant thinking turned them that color, but this was probably a joke; his mother also had grey eyes.
Oh well, goes to my favs anyway