Customizer color picker "clear" button not reset the value to default

[zaherdirkey]

While useing in customize the theme WP_Customize_Color_Control
Clear button reset the value but not saved after Save/publish
Refresh the page to check if it is not saved.

    $wp_customize->add_setting('user_color', array(
        'default'           => null,
        'sanitize_callback' => 'sanitize_hex_color',
        'capability'        => 'edit_theme_options',
        'type'              => 'theme_mod',
        'transport'         => 'postMessage'

    ));

    $wp_customize->add_control(new WP_Customize_Color_Control($wp_customize, 'user_color', array(
          'settings' => 'user_color',
          'label'    => __('User Color', 'metallic'),
          'section'  => 'metallic_options'
        )
      )
    );

[SergeyBiryukov]

Related: #21059

[westonruter]

By “Clear” button do you mean the “Default” button?

[zaherdirkey]

Custom Color Clear button

[zaherdirkey]

It is appear to me "Clear" button but yes I need this button to reset it to the default, and the default value for my example is null mean "do not use it".

And this my project on github
​https://github.com/parmaja/wp_metallic

[chriscct7]

This is an issue caused by custom code, to create a behavior not supported by WordPress core. In this case, the plugin involved needs to implement it's own save method or use it's own colorpicker