[tbworld]

Use the following to alter the "Mark Forums Read" color.

Add this to your 'additional.css' template for your style.

.navlinks > a {
   color: white;  /* Change Color Accordingly */ 
}   

.navlinks > a:hover {
   color: red;  /* Change Color Accordingly */ 
}

The javascript file you are looking for is:
"/clientscript/clientscript/vbulletin_read_marker.js"