You can use styles on a Super Tile once it’s added to your dashboard. This gives you the ability to change the color of content on a tile based on the state of devices or variables that are used in the Super Tile.
The glow effect is currently limited to the lighting tiles that natively support it (eg. Switch Tiles). Feel free to create a feature request to have this added as an icon effect in the style system though!
There have been other threads and work arounds mentioned in the community before, so I suspect others would vote for a formal feature request!