Colour change of caps

Anyone know the best way or a place to get replacement Oil cap, Washercap and dip stick? Looked on ebay but nothing sticks out. Would really like a set of red ones just to colour code with the body a bit better. Dont think its something that can be painted?? Dont want metal anodised ones, just plastic to look standard.
 
you will have to buy replacements from the dealers and get them painted

someone on here has painted them and they looked great
 
I couldn't even find metal replacement types! Painted them on my old 1.4 and they looked pretty good colour coded with the car.