I changed 6 bytes in memory. At first sprites wouldn't appear under the dialog window at all, then I got them to show up under there just fine. I'll have to do some reading up and more experiments on it
There are 2 parts to the dialog window, the border, and the inner, and these 2 chunks reflect that.
Simply change the addresses to these, and freeze it. It will stay if you just write it there, but the moment you leave the area, or enter a menu, the addresses will be refreshed.
7F1524 - 09
7F1525 - 56
7F1526 - 78
7F1528 - 09
7F1529 - 52
7F152A - 78
It looks neat, but I'm not sure how it will react with, for example, a translucent layer 3, or spell effects, etc...