I think I am on my 4th set of badges in 2 years - the "works" replace them at each service or whenever I take it in!!
Last time I asked for the old badges to experiment with and have used a sharp pick to remove all of the blue plastic and will experiment with replacing it with le Mans green to match the body colour.
The last lot of badges were replaced at Christmas - the O &R have since fallen out. The works admit there has been a problem as they are not up to standard.