Lucy uses the default AIXM5 styling to visualize AIXM5 data.

You can use OGC SLD to customize the styling of AIXM5 data, as explained in the LuciadLightspeed documentation: Visualizing AIXM5 data on a GXY view and Visualizing AIXM5 data on a Lightspeed view.

In Lucy, you can provide custom SLD styles through TLcySLDLayerStyle. If you ask the ILcyLayerStyleProvider for the style of an AIXM5 layer, the layer style provider will return a TLcySLDLayerStyle instance. You can modify the styling on that instance through the getStyles() method.