Smile [REQ] Replace 4.3 System-Wide Colored Emoji

With 4.3 TW Roms, Samsung introduced colored emoji that work on a system-wide basis. (Including notification panel, and in apps such as Instagram and Facebook). The Emoji are colored, and much prettier than the black robots we saw before on 4.2

My question is, is there a way to replace these emoji? Perhaps theme them, or make them look like the "standard" ones we see on Whatsapp and iOS?

It shouldn't be hard, we just have to figure out where the png are stored.

Note: I know there are plent of ways to replace the emoji in MMS.apk... but i am reffering to the SYSTEM-WIDE emoji

Phone: Samsung Galaxy S4 i9505
Carrier: Vivo Brasil
Rom: WanamLite XXUFNB8 V2.2 Android KitKat 4.4.2
Recovery: CWM Advanced Edition PhilZ Touch
Baseband: I9505XXUFNA5
Kernel: 3.4.0-373648