diff --git a/wp-content/themes/twentyseventeen/inc/color-patterns.php b/wp-content/themes/twentyseventeen/inc/color-patterns.php
index c3913e1e6b..a59e64457f 100644
--- a/wp-content/themes/twentyseventeen/inc/color-patterns.php
+++ b/wp-content/themes/twentyseventeen/inc/color-patterns.php
@@ -557,5 +557,15 @@ body.colors-custom,
 	}
 }';
 
-	return $css;
+
+	/**
+	 * Filters Twenty Seventeen custom colors CSS.
+	 *
+	 * @since Twenty Seventeen 1.0
+	 *
+	 * @param $css        string Base theme colors CSS.
+	 * @param $hue        int    The user's selected color hue.
+	 * @param $saturation string Filtered theme color saturation level.
+	 */
+	return apply_filters( 'twentyseventeen_custom_colors_css', $css, $hue, $saturation );
 }
diff --git a/wp-includes/version.php b/wp-includes/version.php
index f48d6d7282..218468b407 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-RC1-39385';
+$wp_version = '4.7-RC1-39387';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.