If you want to do this yourselves.
1st Download and install xposed framework installer to your phone (root needed)
Get it here
Check framework is the latest in framework
.Then in download section of xposed framework search for resflux and install
Or get it here
Then in modules section of xposed enable resflux and reboot
Open reflux and select laboratory
Then click the app you want modded
Then simply use the ui to select and change texts. Colours back rounds etc.
Then to apply . Press back and reboot
Use only png images for back rounds
IL give a more detailed guide when I get to my pc.