Any detail explaining Silver and Gold rare monsters?

[Arika]

I know that gold is more rare than silver. but is there anything else about them? such as Silver give more exp and Gold give more meseta or something like that?

[Shoterxx]

Silver give extra upgrade EXP, and Gold give a little more on top.

[Kondibon]

They also have boosted drop rates I think, and the bosses have a chance to drop the silver and gold weapons that are basically the NGS equivalent of empy embrace.
Silver and gold critter have a WAY higher chance of dropping their respective meat, to the point where sometimes the gold ones drop two.

[Ezodagrom]

I know that gold is more rare than silver. but is there anything else about them? such as Silver give more exp and Gold give more meseta or something like that?
Silver/Gold bosses drop weapons that are good to be used as materials for weapon grinding.