How to change the bg color of sms text? S40 2nd Edition

[kukata]

My Nokia 2610 is based on the S40 2nd Edition platform.
I want to use the Nokia Theme Studio v2.2 to personalise the default blue background color of sms text, more exactly, the text to be chosen from when inputing Chinese simplified characters. And, is it possible to change the font color as well?
As far as I know, the text highlight color can be changed when changing the highlight color of Calendar.
Does anyone here know about it?

[Le Pharao]

For 2610 themes you have to use Theme Studio 1.2. Sorry, but in this program you cannot change any text colours.