If, as Keeper, i use all my Darkness tokens, am i allowed to proxy other tokens or once they are used, thats it? I like the second part of my question because it would make me use them more wisley. Anything official though?

*sigh*

Rulebook, under "Component Limitations" heading:

"Other Tokens: All other tokens are unlimited. If players run
out of a token type (such as horror tokens), they should use a
suitable replacement (such as a coin) to mark such an effect." (p. 25)

Thank You Dam, and yes i should have remembered that.