paint or don't paint ?
 

should i leave my ktm orange or would i be better of to paint or cover it with vinyl, maybe a dark mat? to make it look a bit older.

Where are you going?

A shiny new bike will attract more attention and look like your weathy.

If you want to make it less attractive then stick on plastic ('contact' over here) is a cheap option. Make certain to use a polish before you stick it on. The wax left behind by the polish helps when it comes time to remove it.

Have a look at Jeremy Bullard's excellent web site www.fowb.co.uk
I painted my KTM in matte black, which looks very dull and blends in with the local vehicles.Anything brightly colored will draw attention, mostly from the street kids.