Fatal error: Call to undefined function drupal_basename() in /modules/color/color.module on line 99

I am looking into this, and it looks like in the file.inc file we might need to change basename to drupal_basename since it isn't defined anywhere in our sites.

http://api.drupal.org/api/drupal/includes--file.inc/function/drupal_base...
http://drupal.org/node/1424840
http://drupal.org/node/278425

I found the answer to our problems! It allowed my color.module to work with no errors. One step closer!

Just create a new function in the file.inc file in your includes folder. includes/file.inc

I created it right before the function drupal_mkdir

function drupal_basename($uri, $suffix = NULL) {
$separators = '/';
if (DIRECTORY_SEPARATOR != '/') {
// For Windows OS add special separator.
$separators .= DIRECTORY_SEPARATOR;
}
// Remove right-most slashes when $uri points to directory.
$uri = rtrim($uri, $separators);
// Returns the trailing part of the $uri starting after one of the directory
// separators.
$filename = preg_match('@[^' . preg_quote($separators, '@') . ']+$@', $uri, $matches) ? $matches[0] : '';
// Cuts off a suffix from the filename.
if ($suffix) {
$filename = preg_replace('@' . preg_quote($suffix, '@') . '$@', '', $filename);
}
return $filename;
}