I'm always on the lookout for unique basemaps that are a little different and let my operational layers pop. Sure, you can style your own using the Vector Tile Style Editor. But here Andy Skinner delivers some really interesting and useful "seasonally colored" basemaps that just might make your layers pop.
https://www.esri.com/arcgis-blog/products/arcgis-living-atlas/mapping/four-seasons-styles/
Be sure to check out the Creative Vector Tile Layers group for other options.
