Hello @OlmoVerhagen , at this moment, the legend does not listen to the Annotation (see also for widget that do support it https://documentation.aimms.com/webui/folder.html#widgets-and-css-properties-supported-for-annotation). Thanks for the suggestion!

@Gertjan okay, is there another way to set the colors of a legend widget dynamically? 

There is a way with custom CSS using properties of the items that are generated in the legend. Formally not supported, but easily achievable. 

Below an example where I used the annotation-sc1 that was added to line, bar and legend items in the charts to change the colors. Here I skipped the WebUI::AnnotationIdentifier part as well, as in my case I just refer to the scenario name that is already propagated (btw, this does not work for all pivots of the bar chart, but if that is important, you can of course extend with a custom WebUI::AnnotationIdentifier and align colors with the legend.

Also attached an example.

Just want to add that the legend widget indeed listens to annotations and CSS. See screenshot, the “testing” job is yellow in the gantt chart but red in the legend widget. Use .tag-legend-widget as selector. 

.tag-legend-widget .annotation-color6 {

    fill: red;

    background: red;

}

color6 is a webui::AnnotationIdentifier added to the set but you can also use the set element name in the legend widget.