Hey Jeremie, is there a roadmap or planned features for Designer besides the uservoice? Not that it will sway me in any way :P The pixel processor node looks awesome.
Try turned on "Per Pixel Camera Vector" in your material properties. It's an unfortunately obscure thing in UDK, but that will allow transforms to work with vertex color.
Its like trollface. Only thing that could be done with this logo is conversion to vector, so it would not be pixelated. Shape should be left the same... probably :)