I had cloth with GTI tartan when I bought my car, but now I have a leather interior. It all starts with a bit of colour coding, wheels and some tidying things up. Next is a remap, then an exhaust... Before you know it you're where I am looking at big brake kits, full chassis overhauls, transmission... It gets messy/expensive/time consuming this modifying thing!
I can only hope your will is stronger than mine.