Yes mate, Andy's right:

Three choices...you can either:

1: Paint your orange bulbs silver (they will still flash orange). Cheap and cheerful way of doing it.

2: Buy Silvatec bulbs (around £15 a pair, but look v good)


3: Buy something like this for cheaper price but just as good as silvatec
(Not a ford car, but just to illustrate the bulb on clear lense). They are a rainbow-oily colour and shine very bright orange when lit