Is background-color:none valid CSS?

Question

Can anyone tell me if the following CSS is valid?

.class {
    background-color:none;
}

Answer 1

.class {
    background-color:none;
}

This is not a valid property. W3C validator will display following error:

Value Error : background-color none is not a background-color value : none

transparent may have been selected as better term instead of 0 or none values during the development of specification of CSS.