Plugin: Essentials

In my Server i cant see my color signs,
I mean when i put in &8 thing it registers and goes away but the text itself doesn't change.

Other people in my server can see the text color, but for some reason i cant.

Actually i can only see the color text when im at a high angle to the sign, but right when i face the sign it goes back to regualar text.
If u know what this is, can u help.