I have figured out a way to do just this and it works on the default carbon theme, haven’t tried any others. May not be the preferred or best way…. Edit these files at your own risk! I am on a XU4 on version 5.26
- SSH into your system.
- Use the below command to copy your current es_systems.cfg file. The system will use the new one over the default one if it exists.
“cp /usr/share/emulationstation/es_systems.cfg /userdata/system/configs/emulationstation/es_systems.cfg”
- cd /userdata/system/configs/emulationstation/
- nano es_systems.cfg
- Ctrl+W (to find a line), Search: megadrive and then repeat for pcengine
- Change the following;
<theme>megadrive</theme> to <theme>genesis</theme>
<theme>pcengine</theme> to <theme>tg16</theme>
- Save the file and exit
Restart the system or GUI. Good luck.