Halo 3 skull problem?

Question

I'm trying to find all the skulls int he game, and im playing on campain on normal. The only skull out of 3 that gave me G points and said i unlocked it, was the one at the beginning of "the crows nest" on the big pipe.

Answer 1

some of the skulls are silver....... the silver skulls do not get you achievements... do not worry you will still get hayabusa  

Answer 2

There are 4 silver skulls and 9 gold skulls.  Only the gold skulls can give you gamerscore.  The silver skull's effects were made for fun, while the gold skull's effects make the game harder.

Answer 3

some skulls are silver which are skulls that if u turn them on you get a bonus in the game, the other ones, gold ones will also do this but give u g points, u turn them on for meta games to get more points.

Answer 4

Gold skulls give you gamer-points, silver skulls don't, I think there is about 4 silver skulls. To get the hayabusha armor, you have to get all of the skulls, gold and silver.