move rgb/hsl functions to their own namespace

classes/feeds.php

@@ -322,9 +322,9 @@ class Feeds extends Handler_Protected {
 
 				if (!isset($rgba_cache[$feed_id])) {
 					if ($fav_color && $fav_color != 'fail') {
-						$rgba_cache[$feed_id] = _color_unpack($fav_color);
+						$rgba_cache[$feed_id] = \Colors\_color_unpack($fav_color);
 					} else {
-						$rgba_cache[$feed_id] = _color_unpack($this->_color_of($line['feed_title']));
+						$rgba_cache[$feed_id] = \Colors\_color_unpack($this->_color_of($line['feed_title']));
 					}
 				}
 

classes/rssutils.php

@@ -610,7 +610,7 @@ class RSSUtils {
 							id = ?");
 					$sth->execute([$feed]);
 
-					$favicon_color = calculate_avg_color($favicon_file);
+					$favicon_color = \Colors\calculate_avg_color($favicon_file);
 
 					$favicon_colorstring = ",favicon_avg_color = " . $pdo->quote($favicon_color);
 

include/colors.php

@@ -1,4 +1,5 @@
 <?php
+namespace Colors;
 
 if (file_exists("lib/floIcon.php")) {
 	require_once "lib/floIcon.php";