column background color

The easiest way to do this is by changing it in your own CSS file.
You can past this code and change the color to your likings.

.full_width,
.one_half,
.one_third,
.two_third,
.one_fourth,
.three_fourth,
.one_fifth,
.two_fifth,
.three_fifth,
.four_fifth,
.one_sixth,
.five_sixth {
	background-color: #ffcc00;
}