Brian, why worry about getting the colour right? Most will be painting them anyway! Your scopes are absolutely amazing! I can't post a pic right now, but I've used one of yours for my sons Christmas present. Saying that, once he's unwrapped it, I will post what I've been able to do with one of yours, and hopefully demonstrate how versatile (despite colour ) your scopes are!
I honestly think you have nailed the castings and they are perfect!
Marc