.Format Command

When you type .format in the Chat Window and follow it with text, that text will appear before any chat message you send from then on. For example, in the Chat Window type
.format ~y~E
and hit ENTER. All of your chat messages will now be yellow and embossed! You can use other lowercase letters for colors as well, such as
~b Blue
~r Red
~g Green
~k Black
~l Light Blue
~m Magenta
~o Orange
~w White
~. Resets the color. (That is Tilde + Period)

Some uppercase letters have meaning as well, for example, if you type
.format ~E~y
your chat messages will all be yellow and embossed. Other styles include
~I Italicizes text.
~B Bolds text.
~E Embosses all of your chat text.
~N Sets all your chat text to normal again.