Here's a video of it in action... The heart has it's own LED controller that continuously beats red. While the letters are controlled by the remote...

https://www.youtube.com/watch?v=L1L_YluT1x8

Here's a group I made for my LED lights and things, if you like my LED designs, join the group and you'll be updated as I upload new ones... I plan on making a lot more logos just like this. So if you have and suggestions, please tell me and I'll make it.

http://www.thingiverse.com/groups/things-with-leds/things

This is a extruded LED I <3 3D Printing sign/nightlight I printed on my dual extruder... I modeled it in Solidworks by importing a text that I liked from a screenshot... I then extruded and filleted the heart and letter and saved it as its own STL to be used in dual extrusion... I then designed a plate around the heart and letter, added holes for screws and saved that as its own STL... Lastly, I designed a shell to go around the plate and robot, the shell has aligned screw holes so it can be fastened to the plate...

I then printed the shell in regular ole black PLA on my Rep 2... And I did the dual extrusion using the same black PLA for the plate and I used Bendlay (link below) to print the robot... I used Bendlay because it is extremely translucent (91% of light passes through)...

I then hooked up an RGB LED strip, wrapped it around the inner shell and hooked it up to an IR receiver so it can be controlled with a remote...

I've also made the following logo's, designs for LED hookup...

SuperMan: http://www.thingiverse.com/thing:905146
StormTrooper: http://www.thingiverse.com/thing:905142
Punisher: http://www.thingiverse.com/thing:905140
Transformers Autobot: http://www.thingiverse.com/thing:903550
Transformers Decepticon: http://www.thingiverse.com/thing:903558
IronMan: http://www.thingiverse.com/thing:904807
SpiderMan: http://www.thingiverse.com/thing:904822
Jeep Emblem: http://www.thingiverse.com/thing:908360
Batman: http://www.thingiverse.com/thing:908353
Mortal Kombat Logo: http://www.thingiverse.com/thing:904811
Full Makerbot Logo: http://www.thingiverse.com/thing:899723
Makerbot 'M' logo: http://www.thingiverse.com/thing:903428
Apple Logo: http://www.thingiverse.com/thing:903448
Android Robot: http://www.thingiverse.com/thing:903441
MakerFaire Robot: http://www.thingiverse.com/thing:900647

Bendlay Link:
http://www.amazon.com/MatterHackers-BendLay-Filament-1-75mm-MakerBot/dp/B00K1NRCIY/ref=sr_1_1?ie=UTF8&qid=1435347958&sr=8-1&keywords=bendlay&pebp=1435347954416&perid=1WG2SRVP9TGP9WAM748W

lightitup