Spectrum4

Was playing with colors a bit - it would be a good choice for a postcard (well - the size isn't good for anything else anyway ).

Oh, you may download it and use as a wallpaper as well (just mind that you need to have a 1225x840 desktop resolution xD )

In other words - I just got bored this evening and created something colorful, cold and simple - just like christmas.

Specs:
3 hours
50 layers
2500x1680