Recently we have been doing some tests, and we have managed to get Doom working, and several versions of it to be able to use it from Stock through RetroArch. We have also added the Spanish version of Cave Story, which you can now download from the Ports section for StockOs.
We have also created our own Theme Thanks to the Tool/Script that cbpex-me created and by modifying the default theme we have achieved it. We have created a section called StockOs Themes where we will upload all the themes that we create and find available.