I'm using kolourpaint on Ubuntu 20.04. The most common usecase for me is open an temporarily created picture and add some mark on it, thus I need default color set to red.
I found that some settings are stored in ~/.config/kolourpaintrc (text settings, tool settings, etc). I tried kolourpaint --help, man kolourpaint, and search through the Internet, but couldn't find any useful information about how to config kolourpaint with kolourpaintrc file. Does anyone know how to do this? Or any other way to set default color to red?