可以合并选项板

$existing = get_theme_support( \'editor-color-palette\' );

$new = array_merge( $existing[0], array(
    array(
        \'name\' => __( \'Strong magenta\', \'themeLangDomain\' ),
        \'slug\' => \'strong-magenta\',
        \'color\' => \'#a156b4\',
    ),
    array(
        \'name\' => __( \'Light grayish magenta\', \'themeLangDomain\' ),
        \'slug\' => \'light-grayish-magenta\',
        \'color\' => \'#d0a5db\',
    ),
));

add_theme_support( \'editor-color-palette\',  $new);

最好的方法是公开数据，以便对其进行修改。您可以通过添加筛选器来完成此操作：

add_theme_support( \'editor-color-palette\', apply_filters( \'themeLangDomain_editor_color_palette_args\', array(
    array(
        \'name\' => __( \'Strong magenta\', \'themeLangDomain\' ),
        \'slug\' => \'strong-magenta\',
        \'color\' => \'#a156b4\',
    ),
    array(
        \'name\' => __( \'Light grayish magenta\', \'themeLangDomain\' ),
        \'slug\' => \'light-grayish-magenta\',
        \'color\' => \'#d0a5db\',
    ),
) ) );

add_filter( \'themeLangDomain_editor_color_palette_args\', function( $palette ) {
    $palette[] = array(
        \'name\' => __( \'Black\', \'themeLangDomain\' ),
        \'slug\' => \'black\',
        \'color\' => \'#000000\',
    );
    return $palette;
} );

为了扩展Vitatus的答案，如果您使用的是编辑上述内容的子主题或插件，则效果最好。

假设editor-colour-palette 在具有默认优先级的操作中调用，您可以在之后调用它（通常调用after_setup_theme 优先级大于10）

e、 g。

/**
 * Add the pink colour to the site
 *
 * @return void
 */
function wpquestion357851_add_colours()
{

    $existing = get_theme_support(\'editor-color-palette\');

    $new = array_merge($existing[0], array(
        array(
            \'name\'  => __(\'Pink\', \'twentytwenty\'),
            \'slug\'  => \'pink\',
            \'color\' => \'#ff14a7\',
        ),
    ));

    add_theme_support(\'editor-color-palette\',  $new);
}
add_action(\'after_setup_theme\', \'wpquestion357851_add_colours\', 20);