I remember there was some hotfix branch on the 0.5.2 github that may have included newer code, but I don't recall if that got then merged into the main 5.2 branch or if one still needs to clone .5.2, pull the changes from the hotfix branch, then compile to get whatever's in Twilightmenu's build. I'm also not sure where twilightmenu is sourcing that build either.
Mavica's build is equally behind whatever's in twilightmenu despite the additional custom palette stuff. Case in point -- on Infinity by Incub8 games, the text box rendering in mavica's build (easiest example is the file load menu) is off and completely flat compared to both real hardware and the current twilight build, so clearly a few tricks got added somewhere.