['background'] = $preset_background_color ? $preset_background_color : $custom_background_color; } // Gradients. if ( $has_gradients_support && ! wp_should_skip_block_supports_serialization( $block_type, 'color', 'gradients' ) ) { $preset_gradient_color = array_key_exists( 'gradient', $block_attributes ) ? "var:preset|gradient|{$block_attributes['gradient']}" : null; $custom_gradient_color = _wp_array_get( $block_attributes, array( 'style', 'color', 'gradient' ), null ); $color_block_styles['gradient'] = $preset_gradient_color ? $preset_gradient_color : $custom_gradient_color; } $attributes = array(); $styles = wp_style_engine_get_styles( array( 'color' => $color_block_styles ), array( 'convert_vars_to_classnames' => true ) ); if ( ! empty( $styles['classnames'] ) ) { $attributes['class'] = $styles['classnames']; } if ( ! empty( $styles['css'] ) ) { $attributes['style'] = $styles['css']; } return $attributes; } // Register the block support. WP_Block_Supports::get_instance()->register( 'colors', array( 'register_attribute' => 'wp_register_colors_support', 'apply' => 'wp_apply_colors_support', ) );