Zerogee
Clencher's Bogleman

I've just bought (second-hand) one of Piko's big chunky class 204 DB diesels - the one like the Harzkamel but with the standard-gauge bogies.
It's a nice loco, but it is also a hideous shade of toy-like BRIGHT red.
Now, I don't normally weather my stock, especially the locos - but in the case of this one I really just want to tone down the eye-searing colour a little.... I don't want it to look heavily weathered, not that I have any problem with that but it would be very out of keeping with the rest of my collection. I just want to do a very light treatment to dull it down and make it look a bit less toy-like.
Any advice, pictures, links to tutorials or anything else useful?
Thanks in advance!
Jon.
It's a nice loco, but it is also a hideous shade of toy-like BRIGHT red.

Now, I don't normally weather my stock, especially the locos - but in the case of this one I really just want to tone down the eye-searing colour a little.... I don't want it to look heavily weathered, not that I have any problem with that but it would be very out of keeping with the rest of my collection. I just want to do a very light treatment to dull it down and make it look a bit less toy-like.
Any advice, pictures, links to tutorials or anything else useful?
Thanks in advance!
Jon.