I've had a go at it..
It covers adding borders to comments, adding images or colours to the comment box or comment page background, altering the font family and font size.
It does *not* cover custom borders - I've yet to learn that stuff :)
I have tested everything I did, and it should be okay - yell here if it's not !
Some cosmetic changes - like page jumps - may yet be added, but it's not far off done.
Any suggestions for improvements - on any of the pages there - are very welcome.