I'm looking for a plugin that will allow me to assign my own image to use as the message window and name box background, instead of rendering one based on the graphics in Window.png.
Bonus points if there are parameters to adjust the padding of the message window and line height...
The Altimit Pixel Movement plugin includes an option to disable mouse and touch controls.
So if you're interested in pixel movement, two birds with one stone.
You can find it here.
If pixel movement's not your thing somebody else might be able to offer up a cleaner solution. :)
For what it's worth, I was able to almost replicate what you're seeing by changing the colour mode from RGB to Indexed Color with these settings.
Once I have it in this mode though, I can't revert it back to how it was without closing it and reopening the file. So your Photoshop must be putting...