[GM]

That was a brilliant thought shan but it didn't work either.
I even tried a variation in styles:

A.Tab:link { 
   COLOR: #FFD44C; 
   TEXT-DECORATION: none; 
} 
A.Tab:visited { 
   COLOR: #FFD44C; 
   TEXT-DECORATION: none; 
} 
A.Tab:hover { 
   COLOR: Aqua; 
   TEXT-DECORATION: underline; 
} 
A.Tab:active  { 
   COLOR: #FFD44C; 
   TEXT-DECORATION: none; 
}

I might have found the perfect workaround though... I'm ripping the speedbar out!