Those "silver" CDRs that you can buy for your cd burner differs from the "blue, green/black, etc." only in their dye. They all use exactly the same technology.
The real silver music cds that record companies use are pressed by CD stampers. They cannot be "burned" by the laser in your CD burner.
Basically, optical media utilizes only a thin layer of paint which is burned away by the laser of the CD burner. The temperature/power that the laser would have to produce/use to burn away silver is unreasonably high/expensive. You would probably have to cool the laser with liquid nitrogen.
Blue/green dyes better reflect the blue light to be read by your cd-reader, assumming your cd reader utilizes a blue lens.