Below is the code that you can use to create color style options for your site:
/** Create additional color style options */ add_theme_support( 'genesis-style-selector', array( 'theme-blue' => 'Blue', 'theme-green' => 'Green', 'theme-orange' => 'Orange', 'theme-red' => 'Red' ) );
In addition to the default color style, the code above will generate a “Color Style” metabox on the Genesis > Theme Settings page in your dashboard.
In that metabox you will see the following options in the dropdown menu: “Default, Blue, Green, Orange and Red.” Here’s an example of how that would look:

If the “Blue” color style option is selected, the .theme-blue body class will be applied. Here’s an example of how that would look:

Now you can target CSS that is specific to the blue color style. Sample code to add to the bottom of your child theme’s style.css file would be:
.theme-blue a, .theme-blue a:visited {
color: #0d72c7;
}
Note: This function requires Genesis v1.8 or above.