One of the main changes that Google brought to Android 13 was Material You. This is more or less an aesthetic feature where apps could change their icon to match the overall theme and color scheme of their phone, giving it a more uniform look.
The downside to this feature is that as far as third-party icons are concerned, developers will need to support the feature and supply the icon. So, depending on the apps you use, there may be one or two apps that do not support this feature which could “ruin” the look you are trying to go for.
WOW! Google is testing letting you generate themed icons for ANY app, even if it doesn't provide its own monochromatic icon! This is currently disabled by default and hidden behind the "ENABLE_FORCED_MONO_ICON" flag. pic.twitter.com/7zxUnNbTbF
— Mishaal Rahman (@MishaalRahman) January 9, 2023
The good news is that according to a tweet by Mishaal Rahman, it appears that in the latest Android 13 beta, Google is introducing a new feature that will basically force app icons to match the color scheme that you have chosen by generating an icon to match. We’re not sure if these generated icons will provide the best results, but if you’re a stickler for uniformity, we suppose it’s not a bad alternative.
That being said, the feature isn’t live yet so Android users will have to wait until the feature becomes available to them, which at this point in time we’re not sure when that will be, but it might be something worth keeping an eye out for.