his macro is to change your wow text in another colour,it's not really a hack in my opinion,I don't really know if it is possible on Retail wow,only tested it on Private servers,and on some private servers it's also bannable,so watch out with it

So make a macro with this: (Just copy+paste)

/run if(not scm) then scm = SendChatMessage; end; function SendChatMessage(msg, type, lang, chan) scm("\124cff00B4FF\124Hitem:19:0:0:0:0:0:0:0\124h" ..msg.."\124h\124r", type, lang, chan);end;

The orange part in the macro can be changed to another Hex Code,the hex
code in this one is blue colour,the hex codes can be changed so you can
get other colours,you have a few sites with hex codes,the one i use is:

Webmonkey | Reference: Color Codes

To disable the special colour,you just relog,if you want the colour again,click the macro again

Another link for the hex codes: [Only admins are allowed to see this link]
You need to zoom because the image is a bit small^^