how to change the colour and text of it
firstly log in to your cbox
then click Look and Feel and then colours and fonts
the red box is where you change your cbox colours
3. is where you change your font style
different font style :
4. is where you change your font size.
to change the smilies go to
options > smilies
replace the URL with the smiles you want and then just click save ^^
to change the cbox size, cbox form, number of messages you can just change it here.
Look & Feel > Layout Options
when you are done, just click save ! ^^
if you want to delete messages go to messages > messages
and then you can delete the messages you do not want :)