I changed my background colour in main window (with all the contacts) to green and I had to change my chat windows by hand (i did one.. and now all of them are green)

BUT my alerts which show who comes online/goes offline are blue?
i have tried to change them by going to preferences.. clicking the "options" link when an alert appears.. right clicking the alert.. and theres no options to change the colour.

how do i get my alerts to become green?

its a small problem, but slightly annoying because i dont like blue and it looks all wrong!!

If you're using Windows Live Messenger 2009 then the colour of the sign-out alert relates to whatever colour messenger the contact is using.