Hi! does anyone know how to change the spar button's color? I'm using this code, but it only changes the font color, not the background color

table#sparring.table td.right_odd input {
color:#B4D5F4!important; (THIS WORKS)
background-color: #27324D; (THIS DOESN'T WORK)
border: none; (THIS WORKS)
text-shadow: none!important; (THIS WORKS)
}