How to change color option for WordPress Plugin

Following is the extract from T-Shirt Designer plugin. When I click on color selection it opens up a box with various colors to select from. However, I don't want the box , rather i want to show only few selected colors to display. How i can convert this code to display specific colors to select from rather than color box.

    <div class="form-group">
        <label for="color-text"><?php _e( 'Color', 'nm-wcpd' ); ?>: </label>
        <input type="color" class="form-control" id="color-text">
    </div>

via Chebli Mohamed