implement mechanism to register css variables through inherited colors.txt files and register backgroundColor

app/controller/page.php

         );
 
         $folder->prepare_files();
-        if($folder->extras['colors']) {
-            $folder->structs['default']['txt']['colors']=$folder->extras['colors'];
-        }
+
+        $this->register_key('backgroundColor',$folder);
+        
         $folder->fill_content();
         foreach($f3->get('siteColors') as $k=>$v){
                 $f3->set($k,
                  ? $folder->config['includeBanner']
                  : $f3->get('templateVars.includeBanner')
         );
-
+        
         if ($f3->get('hasBanner')) {
             $banner = new \Modules\CachedImage($folder->extras['banner']);
             $f3->set('banner',$banner->get_src(2000));
     ///////////////////////
     // Utility functions //
     ///////////////////////
+    function register_key($name, &$ff) {
+        $f3 = \Base::instance();
+        if (array_key_exists($name,$ff->config)) {
+            $f3->set($name,$ff->config[$name]);
+        }
+    }
     function linkify($string) {
         $pattern = "/\s@(\w+)[=]([\w,]+)\s/";
         $count = 0;

app/modules/filesinfolders.php

                     $this->EXT[$param['type']]
                 );
             }
+            if($this->extras[$key]) {
+                if ($param['type'] == 'txt') {
+                    $this->read_textfile($this->extras[$key]);
+                }
+            }
         }
     }
 

app/views/colors.css

+html {
+    background-color: {{ @backgroundColor }};
+}

app/views/tpl/index.html

         <link type="text/css" href="/{{ @RESOURCES }}style.css" rel="stylesheet" />
         <title>{{ @title }}</title>
         <style>
+          <include href="colors.css" />
           li { margin-left:1em; }
         </style>
     </head>