/* YOU CAN'T USE A COMMA BETWEEN RGB */
--primary: 253 209 64; /* #fdd140 */
--background: 32 46 59; /* #202e3b */
--background-body: 11 19 32; /* #0b1320 */
--background-border: 49 71 90; /* #31475a */
/*!!! YOU MUST USE A COMMA BETWEEN RGB !!!*/
--primary-rgba: 253, 209, 64; /* #fdd140 */
--grid-dark-rgba: 11, 19, 32; /* #0b1320 */
To customize the UI for yourself, simply edit the RGB color.
Examples of color changes