General developer forum

i did this, you can find it in this post
http://moodle.org/mod/forum/discuss.php?d=25800

And you can see how it would look like here:

http://www.tecn.upf.es/~jcodina/sample_new_icon.php

The main idea is that a site can specify a period when the modified activites or resources have a special icon, after being updated. This focuses attention on new subjects. It could also be modified to remark those activities that the student has not done yet and are near to its due date.