Stupid trick of the year. Here you are: Stop suffering the warning on the reports page. In order to activate the colorbox into the libraries directory on Drupal 7, just need to add this on the first line of jquery.colorbox-min.js:
// ColorBox v1.3.21
Stupid, isn't it?
I solved on the comments #26 and #27 at http://drupal.org/node/1074474