BUR #4239 has been approved by @evazion.
create alias silver-framed_eyewear -> grey-framed_eyewear
create alias gold-framed_eyewear -> yellow-framed_eyewear
At those thicknesses, the difference between the colors is minuscule, and most if not all users would be unable to tell the difference. The above aliases the less common names to the more common ones.