Added support for arbitrary hex colors.

config/vufind/config.ini

@@ -681,7 +681,8 @@ authors         = Wikipedia
 ; authorFillColor,titleFillColor: the main color used, you can use any of the 16
 ; named colors from HTML4.
 ; authorBorderColor,titleBorderColor: the color used to make border, you can use
-; any of the 16 named colors from HTML4, or "none" if you don't want any border.
+; any of the 16 named colors from HTML4, HTML hex colors (#RRGGBB), or "none" if
+; you don't want any border.
 ;
 ; maxLines: The maximum number of title lines to be displayed (excluding final
 ; ellipses)

module/VuFind/src/VuFind/Cover/Generator.php

@@ -224,6 +224,12 @@ class Generator
         case 'aqua':
             return imagecolorallocate($this->im, 0, 255, 255);
         default:
+            if (substr($color, 0, 1) == '#' && strlen($color) == 7) {
+                $r = hexdec(substr($color, 1, 2));
+                $g = hexdec(substr($color, 3, 2));
+                $b = hexdec(substr($color, 5, 2));
+                return imagecolorallocate($this->im, $r, $g, $b);
+            }
             return false;
         }
     }