Icon for a mac graphics program

My software (http://test.gdtoolbox.com) is a 2d graphics synthesizer for making textures, web buttons, simple vector logos.

I would like a 512x512 icon that is more mac’ish and serious than my current icon.

Graphic Designer Toolbox

I have made the current icon (gdtoolbox.com/icon.png), but it is a bit too happy for my taste.

I’m about to release version 1. You can download and try out the program (gdtoolbox.com/latest.dmg) - 5mb. Here are some examples of what can be made (bit.ly/gdt_flickr) with it.

I will give out a free license to any of you that joins this contest. For this I need to know your full name + email, just send me a private message.

Desired Color Scheme- transparent background
- no specific color scheme, but strong colors preferred
Desired Style- look good on white background
- with a minor black drop shadow
- for inspiration ( bit.ly/apple_icons )
Image Size- 512x512 pixels
Accepted File Formats- pdf, eps, psd, tiff, png

No text on the icon