macOS may not have as many personalization options as it once did, but you can still customize app icons ... the image you ...

There have been some solutions to create invisible app icons to color-match ... allows you to create custom transparent widgets that work with any wallpaper background. For now, options are ...

For the Windows 98 layout I made for the top image of this article (inspired by this tweet) I found all the background images and app icons ... of the transparent PNG icons by hand, was a complete ...

If you choose Tinted app icons rather than the Dark style, iOS applies a different algorithm to change the colors of icons. Tinted icons feature an accent color on a dark black background.