Just put this in your aliases. It is some simple aliases that change ty to Thank You and a bunch of those and it also adds color. I hope you like them.
/lol /say 4L14augh 4O14ut 4L14oud
/omg /say 4O14h 4M14y 4G14od
/brb /say 4B14e 4R14ight 4B14ack
/ty /say 4T14hank 4Y14ou
/yw /say 4Y14ou're 4W14elcome
/lmao /say 4L14aughing 4M14y 4A14** 4O14ff
/rofl /say 4R14olls 4O14n 4T14he 4F14loor 4L14aughing
/roflmao /say 4R14olls 4O14n 4T14he 4F14loor 4L14aughing 4M14y 4A14** 4O14ff
/wtf /say 4W14hat 4T14he 4F14***
/lmao /say 4L14aughing 4M14y 4A14** 4O14ff
/omfg /say 4O14h 4M14y 4F14******* 4G14od
/lmfao /say 4L14aughing 4M14y 4F14****** 4A14** 4O14ff
/heh /say 4H14eh
/hehe /say 4H14e4H14e