Ok got the theme working and merged with CakeHax. But there's some issues with the bottom screen when launched from MSET/Spider:
View attachment 21067 View attachment 21068
(click to enlarge)
I will link to the merged source that you can compile and tweak your self. This was pulled from midkid's fork with current rxTools source merged. It boots fine it looks like. but the bottom screen is fudged when booted from MSET 9.x. Initial setup menu causes theme gui to not appear at all. (but does boot if you let it time out or hit X/A right away). After initial setup the GUI works with the top screen looking normal (but top screen remains blank I think on initial setup)
So some further tweaks will be needed with the draw code.
Link to the source:
http://www.battlefieldsingleplayer.com/apachethunder/3ds/rxToolsTest.zip
It should build fine in windows. Best of luck merging it with github. The CakeHax submodule gave me trouble last time I tried to add it to a repository that didn't have it. Github won't let me create a second fork of rxTools.
Seems like it looks jacked up when booted from Spider too. Did not test Ninjhax.
The source has filepack not encrypted. You can re-enable that if you want, but I don't think this is the reason for this. The new entry ROP is more then likely not getting along with current draw code. Running rxTools with no encryption on data.bin/filepack did not alter how my draw code behaved with my fork of rxTools. Seems to be an issue with new draw code instead.