I made the graphics myself.
Bought some 1" black vinyl strips from a site called "cars-n-stripes.com" and some grey and black 2" to make the lettering. It's good quality vinyl and pretty cheap. I then cut/scapeled the letters, out using a 1:1 printed SEAT SPORT image as a template. Bit fiddly but as you can see it can look pretty professional when finished.
I've done this on my previous RX-8 and both Leon Cupras that I had before the FR, so I'm quite practiced at it. It's not always to everyone's taste but it's not everyone's car and makes the car a bit more individual I think.
Took a little bit of time but in theory you can make any graphic you want. Probably cost me £20 all up plus about 2 hours of my time.
The other way would be to supply a jpg file to a car vinyl graphics company and have them print and computer cut them out for you.
I was quoted about £80 to get some done this way including fitting, but in the end I opted the DIY route.
Re the rear bumper, I bought an FR and spec'd the aero (
K1) kit as an option. As the kit was fitted by the dealer it came in in primer and I got them to paint the bumper to a photoshopped image I sent them. As they already have to paint the
lower valance in matt black they already have the correct colour. As your
K1 kit would have been fitted at the port of entry it might involve tracking down a match for the paint used on yours.
For your info. you might be able to ask a question of Marko @ Hobin Group in Preston (who did my car) and they might be able to find out from their paint
shop what they used. His no. is 01772-333030
Let me know if you need any more
help mate.