Did you by any chance root using Chainfire's method? If you did, just use the CWM app that comes supplied when you flash his kernel to flash the original KKA firmware (the one you are using). It is non-wipe and will be rooted by his app.
To download the KKA firmware, click here
. Sign in to download.
Then read Chainfire's instructions about flashing firmware using the CWM app VERY CAREFULLY in his thread here
. Read the first few posts... and then read them again
Unfortunately I am not at work and don't have unmodified system apks to provide you with a flashable zip to replace the theme.
Alternative to the above... ask around and see if anyone has unmodified apks from KKA which you can flash. You will need all of the files which were contained in the themed zip you used.
EDIT: About those dark lines, are you sure it's not colour banding. All Note users get them (they are often feint). Most Note users won't admit to it though
Never, ever conform