Please implement proper support of mermaid diagram customization. Usually, you can create mermaid diagrams and override the base theme to customize the look, i.e.: --- config: theme: 'base' themeVariables: primaryColor: ... ... --- You can add such theme configuration even in the D360 diagram editor, it reflects the settings in the WYSIWYG, I can even use the download option and get the customized diagram. However, on the live site the diagram is rendered using the default look.