If you've ever had the urge to re-size, re-position, re-color, or even theme the icon of your application icon notification badges, then check out a new free jailbreak tweak called MagicBadges
by iOS developer whynot.
With the tweak installed, you will be able to make all of your application icon notification badges look different from everyone else's. It will add a preferences pane to the Settings application where you can adjust the appearance of your application icon notification badges to your liking:
You'll find a respring button, a toggle switch, and a preferences cell in the main preferences pane of the tweak. You will need to respring every time you make changes to the settings.
From the preferences cell, you can adjust the appearance of your badges. You will find an option to keep the color as the original color, change the color based on the color of the application icon, or change the color manually based on RGB sliders. There is also a transparency slider so you can adjust the transparency of the badge.
Underneath the sliders, you will find the option to set an image other than the round default image as your notification badge image:
Some of the images look better than others, some look absolutely absurd, honestly, but there are some good ones. If you want to add your own images, you can do so by visiting /Library/Application Support/MagicBadges and adding your own 50x50 .png image file to use as an application icon badge.
You will also find that you can touch and drag, or pinch to zoom to move the location of your application icon badges on your icons, or change the size of them:
MagicBadges offers a ton of customization options that could be combined in ways to create a really cool aftermarket application icon badge style, so if you'd like to give it a try, it's available for free right now in Cydia's BigBoss repository. It works with devices running iOS 7, but iPads are not supported at this point in time (iPad support is coming in the future).
iOS 7.0-7.0.6, iPhone or iPod touch
iPhone 5 running iOS 7.0.6