Use a greyish color for system messages

This color is easily adjusted
Fix name coloring when users are renamed
Ugly hack which fixes two colors in a row

This is a horrible hack to "continue" the previous string color and
format after a RESET has been encountered.

This is not HTML where you can just do a </style> to resume your
previous formatting!
Allow for 256 different colors for username colors

I have heard this should be fairly well supported, so I'm hoping these
colors will all show up nicely for everyone.
Merge remote-tracking branch 'origin/pr/6'