Try this:
1.
/color -> receive a book with color codes like &3 for blue
then:
2.
/nick &3yourname
(no space after 3!)
-> name should be blue now in chat.
wanna do more than one?
3.
/nick &3&lyourname
(that's a small L there)
-> name should be blue and bold (IF you have the perk) now.
or
4.
/nick &3your&8name
-> name is part blue, part grey now.
Please let me know if it resolves your problem.
Good luck, Calari