Hello,
I've made a quick search and the only repository I've found has the last update on 2012 so I don't think it is the most up-to-date.
I've searched: https://git.moodle.org/gw https://github.com/moodlehq and https://github.com/moodle but only found the amos repository at https://github.com/totara/moodle-local_amos
I would like that the comments on a contribution use all the width available, and have found that we can just remove a line to do that: https://github.com/totara/moodle-local_amos/blob/master/styles.css#L484 and would like to make a pull request (see the attached screenshot how it gets better).
It would also be nice to remove the font restriction that is put by comment-list (comments moodle api) but it would have effects outside AMOS, so I will discuss that on the proper forum =)
Kind regards,
Daniel