I've never personally enjoyed the badge-centric aspect of iOS’ notification system, and with that in mind, I’m always looking to try new jailbreak tweaks that present novel ways of communicating when an app has a missed or pending notification that needs attention.
One of the latest releases in this department is a tweak called Firefly by iOS developer Sean Caissie. It replaces the standard application icon badges with something that’s both easier on the eyes and a bit more pronounced: a colorized underglow.