BUR #6618 has been rejected.
remove implication opaque_glasses -> glasses
create alias opaque_glasses -> opaque_eyewear
create alias partially_opaque_glasses -> partially_opaque_eyewear
create alias opaque_monocle -> opaque_eyewear
Because having a separate single digit tag for monocles only is dumb
(The half_opaque_glasses alias could also probably be renamed, but right now I don't see it hurting anything)