Bukkit

There is pice of hooks.yml:

player:
  format: $e<tip="Click here to msg player"><prompt="/msg %name">%name</prompt></tip>
  format-op: <tip="Click here to $ctp"><ref="/tp %name">%name</ref></tip>
  format-self: $2<tip="$aYup, it's you">%name</tip>

There you can set how player name will be send.

Eg:

When player abc (normal or op) send message:

• player who send message will see normal his name with color 2, and when he'll hover on this he will see green text "Yup, it's you"
• op will see white abc, and when he'll hover on this message he will see "Click here to tp" (tp is red)
• normal player will see yellow player name and:
  • on click he will have "/msg abc " in chat
  • on hover he will see "Click here to msg player"

If you have any question write it in comment ;)

Sorry for our english, We're from Poland :D