string HoverText = "** Your Text Here **"; // YOUR TEXT
vector Color = <0,0,0>; //Color 1
vector Color2 = <1,1,1>; //Color 2

float Transparancy = 0.75; //  Transparency of the Text 1.0 is Solid.
float Timer = 0.2; // speeeeeeed  
integer Flash = FALSE;


default
{
    state_entry()
    {
            llSetTimerEvent(Timer);
    }
    timer()
    {
        if (Flash == FALSE)
        {
            llSetText(HoverText, Color, Transparancy);
            Flash = TRUE;
        }
        else
        {
            llSetText(HoverText, Color2, Transparancy);
            Flash = FALSE;
        }
    }
    on_rez(integer start_param)
    {
        llResetScript();
    }
}