.green {background-color : green}
.blue {background-color : blue}
.red {background-color : red}
.white {background-color : white}
.black {background-color : black}
.brown {background-color : rgb(200,100,0)}
.gray {background-color : gray}
.lightgray {background-color : rgb(200,200,200)}
.darkgray {background-color : rgb(50,50,50)}
.cyan {background-color : aqua)}
.maroon {background-color : maroon}
.pink {background-color : rgb(255,0,255)}
.orange {background-color : rgb(255,175,0)}
.violet {background-color : rgb(100,0,150)}
.darkgreen {background-color : rgb(0,100,0)}
.darkblue {background-color : navy}