ScrollingMessageFrame:AddMessage("text" [, red [, green [, blue [, id [, addToTop]]]]])
Arguments:
text - Text of the message (string)
red - Red component of the text color for the message (0.0 - 1.0) (number)
green - Green component of the text color for the message (0.0 - 1.0) (number)
blue - Blue component of the text color for the message (0.0 - 1.0) (number)
id - Identifier for the message's type (see :UpdateColorByID()) (number)
addToTop - True to insert the message above all others listed in the frame, even if the frame's insert mode is set to BOTTOM; false to insert according to the frame's insert mode (boolean)
