I have a vinyl cutting machine that makes stencils. If you find the right sized logo I can make you a stencil to stick on the seat while you paint it.
Just run this up as a rough example. If thats the sort of thing you want, let me know the size and I'll mount a couple up properly and get them in the post for you to try.
You need something like this to paint the vinyl http://www.vinyldye.co.uk/?gclid=CKK...FW3MtAodRxEAVA