This post might be 7 years old, but I'd like to share my input anyway since I enjoy using ScummVM with the NES version of Maniac Mansion so much, but the off colors were bugging me. FYI, the color palette information of the games using the Scumm engine are located in /engines/scumm/palette.cpp. You ...

I did change the THEMERC file, giving the theme another name, and used the same file name for all STX files (scummvmlaurent_gfx.stx, scummvmlaurent_layout.stx, scummvmlaurent_layout_lowres.stx) inside my ZIP file (scummvmlaurent.zip). I also did change the theme path to the directory inside ScummVM....

I tweaked the ScummVM Modern Theme in order to make everything a bit bigger as I'm using ScummVM on a iPad Air with Retina Display. For an unknown reason, the theme doesn't seem to be detected by the software, even though I put it's ZIP file alongside scummvmmodern.zip and scummclassic.zip inside th...