Here's where it's up to, FWIW:

I bought a front guard as a new, genuine part for my incredibly slow-moving 87 CR125 project. I've been suspicious of the colour as it seems too pink and not orange enough, but I've also got a rear that's the same colour.
Today I put it on the 250:

(My frame is too orange, but note the colour difference between the guard and the back of the numberplate...).

/
