i know its petty, but as a designer i was tired of arduino not playing nice with the icons next to it in the dock. (esp. when you put arduino and processing next to each other.) so i took a moment and redid the arduino icon with a little gradient and drop shadow so that it fits in better with the rest of my icons.
i changed the way my dock looks, but this should give you an idea of what it looks like in the dock:
and with leopard supporting icons up to 512x512 for coverflow, this is how it looks in that:
id like to submit it to the developers if they'd like to use it for future releases, but i dont know how so im posting it here.