Transparency grid in Illustrator CS3

Hi there,

I need help to write a script to change the transparency grid colours in Illustrator CS3 to custom ones. I tried by using GUI scripting with no luck. Any idea?

Thanks,
Cary

Model: Mac Pro Dual-Core Intel Xeon 2.66 GHz
AppleScript: 2.0
Browser: Safari 525.13
Operating System: Mac OS X (10.5)