You have to use the Handwriting Plugin (only for windows XP and 2000). That brings the tabs.
To colour text you have two options:
Use the format tags (in the menu or in the little icon above "send" you'll find them all)
Or with shortcuts (try typing Ctrl+K, for choosing a color)
Hm, I don't know if it was added to the plugins section in the website (http://www.msgplus.net). But if you search it here I'm sure you'll find the file.