A friend of mine had some stickers made up from a signwriter. It didn't cost him much, just put together a design in Photoshop / Illustrator and away you go.
I've just bought a 6 point schroth harness from eBay - £70 delivered. Buy it now price of £100 delivered but my offer was accepted. There is another set advertised in red. Just search for schroth harness.
3" shoulder straps with 2" lap straps. It's also got an aircraft style buckle which is cool.