All of our themes come with five different color samples (1) that are created by professional designers so that the template will be as good as possible. If you want you can use your own colors, you can do this by clicking on the gear wheel (2).
Every color box changes something in your template. Normally the color box changes:
The background color on your page.
The menu and the footers background.
Buttons and links.
Headings and dividers.
Text in the navigation menu.
The side navigation menu (If there is one).
Just click on the color box and choose color in the color selector (8) or write in the HEX number (9).