Have you set "System wallpaper" enabled for your home screen?
If so, how do you set the tile effect and styles to match well to your wallpaper?
There is a simple and well-known solution to do this as you know already. It's using several tile background effects in Home options > Tile size & style. Take a look at these screenshots where "Blurred" and "Transparent" effects are used respectively.
Another way is just disabling effect and applying translucent styles to tiles like in this screenshot.
However, I think it's a little bit still boring even though they are great features that cannot be found in the other launchers. You might want to make it more colorful and fancy. But selecting tile colors to match them well to the wallpaper is pretty hard and annoying.
There is a good solution in the case. Just try to turn on "Colors from wallpaper" in Home options > Tile size & style. It overrides the first 9 tile styles with the colors extracted from the current wallpaper. Here is an example where some of the tiles have the extracted colors and the others are set to the 14th style with a translucent blank color (I made it more transparent).
Does not it look good? You should consider that I have very poor design sense.
There is another advantage on this approach. When you would like to change the wallpaper, just do it. You don't have to edit again the tile styles to make them matched well to the new wallpaper. Remember that it extracts representative colors from the current wallpaper and override the first 9 tile styles with them. The translucent black color will not be changed because it is the 14th style.
You can let the wallpaper automatically changed everyday from your photos by turning on "Daily wallpaper" that is in Home options > Behavior & UI. And it would pair well with this feature as well.
I hope this tip will help you enjoy Square Home more.
Thanks.