Hi,
Please try this code in Validate Event of CheBoxfield :
form1.bdyMain.CheBoxfield ::validate - (JavaScript, client)
if(form1.bdyMain.No1.rawValue == 1 || form1.bdyMain.No2.rawValue == 1 || form1.bdyMain.No3.rawValue == 1 || form1.bdyMain.No4.rawValue == 1 || form1.bdyMain.No5.rawValue == 1 )
{
this.fillColor = "125,125,125";
}
else
{
this.fillColor = "255,255,255";
}
Hope,this help.
S,Candy.