(Yes, these screenshots are from the HTC One, but it'll be the same on the S4. (I don't have an S4)
-Download the ROM
-Wipe Data and Cache partitions.
-Flash the ROM using ClockworkMod
Optionals (Boot the ROM first before you flash these!):
-Flash Gapps (Use the latest jb 4.2.2 version) - http://goo.im/gapps
-Root it by flashing SuperSU (or whatever your choice of SU manager is) - http://download.chainfire.eu/supersu
-I *haven't* tested this because I don't have the device. Beware.
-It is NOT rooted nor does it have Gapps preinstalled.
-There seems to be an issue accessing the external SD, will look into it.
-If you're having issues installing, have a look at this post from the thread: http://forum.xda-developers.com/showpost.php?p=45888299&postcount=68
After Rooting The Rom
Install Language Enabler
And Activate All Languages
Then After Restart
Scroll All The Way Down in Settings
You Will Find Small Keyboard Icon
Open it then choose first option
ColorOS-i9500, a ROM for the Samsung Galaxy S 4
ROM OS Version: 4.2.x Jelly Bean
ROM Kernel: Linux 3.4.x
Based On: ColorOS
Current Beta Version: 1.0.0
Beta Release Date: 2013-09-23
Last Updated 2013-10-07