I think the stone is basically clear. There's like a foil or something shiny on the back which is what shows up. They are like plastic or glass. I put one in that was flawed and they fit the hole so well I couldn't get it out, so I took a tapered awl and just tapped it a bit. It shattered and came out easily so I could put another one in.
The ones on mine were actually Blue. I caught hell for getting a red wheelchair when working at the PD. They wanted to know why I got Fire Dept red.....So lean towards blue these days.
I can easily pop those silver ones out and put in another color. I don't know what the wife has around. Thats where the blue came from. I don't think she had red that I recall but could probably get some.
Glad you had a disc sander to remove some wood at the mag well, I left quite a lot and that's usually a tough area to fit, I use a file and going across the grain can be difficult. I have belt sanders but when I'm going for the perfect fit, I try to avoid the power tools. I've found they make it faster and easier to screw up all the hours one has into them.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."