Useful plugin for exDialer newer than v90. It's not a standalone app. Install "exDialer" to access functions.
This plugin helps to customize launcher icons of exDialer by creating shortcut. Both icons of Dialer and Contacts can be customized. You can choose icons from icon set comes with plugin, or even from gallery.
Not all devices support initiatively creating shortcut. If it fails, you can create shortcut in usual way.