I'm working on an exploded view. The offset line style and color are set using the config.pro. For some particular offset lines I want to change the color to a custom color, however I'm not abled to create user-defined colors when I'm in the edit line style window. The complete option to create a new user-defined color is greyed out, see attached image. Does anybody know if this is due to a setting in the config.pro? If this is the case, which parameter should be changed in order to be able to create user-defined colors.