Schlatter0310

Hello, my question is, how to change the backgroundcolor or stainer from Affinity Designer back to white. Mine is beige (235/235/235) when i start Affinity Designer and i can not change it. So all of my pictures get an old beige look to it, that i don't want. (pictures are all with default settings, i didn't change anything after application launch) I tried resetting it and uninstalling it but nothing helped. Thanks for you help.