Webel Best Practice: SysMLv2: STRONGLY recommend black on white style with colours (best only for symbol outlines) only used for special highlighting. [READ FOR INSTRUCTIONS for b/w in Cameo SysMLv2]

Include this at the top of your SysMLv2 project code in the Cameo Textual Editor:

individual part def myProjectStyleConfig :> DS_Styles::CoreStylesComponents::StyleConfiguration {
        part : DS_Styles::StyleSheets::BlackAndWhiteStyleSheet :> activeStyleSheets;
        part : DS_Styles::StyleSheets::DefaultStyleSheet :> activeStyleSheets;
    }

You may have to close then re-open your project or restart Cameo for it to take.