I did and things were going great until my first reboot and my system hung on the boot screen.
After running FirstAid from the Install Disk I got an error something like Key not Found.
I reinstalled and upgraded twice with the same results.
Decided to go back to 10.2.1 until I find the problem or get DiskWarrior.....right now I'm thinking it's my Adobe app installs.
So, ThemeChanger will install 10.2.3 themes without installing some odd new resources for 10.2.3?