I've recently been working on a project with complex labelling requirements over a satellite imagery basemap. Some parts of the basemap are very bright others very dark. When labelling adding a halo effect can make the labels stand out. However, is there option to apply a "blend mode" to the halos? For example a blend mode of, multiply, dodge, darken etc. as found in graphics software and other GIS programs.
Applying these blend modes can make the halo effect much more subtle.
Cheers,
Oliver