I've been playing around with the s40 Theme Studio to create a new theme for my new Nokia 6131.

My theme is almost perfect, but I can't figure out how to change the blue and white gradient that you can see behind the To: and Message: fields in the "Create Message" section and the fields in the "Profiles > Personalise" section. I know that the Theme Studio isn't 6131 specific, but I can't figure out whether there is an option to change this gradient and I'm too dumb to see it, or it's not possible to change (like the menu scroll bar colour).

Anyone know? Thanks