OK, first of all we need good artists, or good and awesome people that knows how to use very good tools like gimp, inkscape, blender, etc... If you know how to use very well a tool, all you need is inspiration.
So we need to create a team for different areas:
-Video artists (need videos that creates a boom, wee have to create the best of the best, dont be conformists)
-Pixel and vector artists (good logos, illustrations, photomanipulation, bannners etc...)
- Green is a good color, it relax the human eye view, but remember The human eye is very very visual, so here comes the taste of color, for example (if wee choose green, lets do a great visual atraction green, from my taste i dont like to much the index page of linuxmint website, even i dont like ubuntu webpage, the new banners of the 3d logo is good, but the brown opaque is so poor.)
Theres a lot of stuff that we can do and create, linuxmint is one of the best distros out there, so lets start to create great visual stuff, what u guys think?
sorry for my english here is my signature http://niyado.deviantart.com i can help.