[Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot] Daisflaque:
Okay heres your best bet for a non-AOSP Rom to run a CM theme.. if this does work.. let us know please.. xthemeengine this requires the Xposed Framework to be installed first.. it does look promising..

Now for Knox....

In light of your saying you've got TB (Titanium Backup) the safest thing you can do would be to freeze Knox's running software.

Simply open TB and freeze..

'A. com.sec.enterprise.knox.attestation

B. com.sec.knox.eventsmanager

C. KLMS Agent

D. KNOX

E. Knox Notification Manager

F. KNOX Store'

BUT.. if your like me.. just 'disabling' it simply won't do.. it must go bye bye.. lol. In this case you could..

A. Grab 'Terminal Emulator' from the Playstore. Open it and.. without the quotes ( ' ' ) type...

'su' ( Hit enter. After a short second it'll ask for su permissions. Grant it.) Next type..

'pm disable com.sec.knox.seandroid' (hit enter) after enter it should say killed.

B. Grab 'Root Browser' or any root capable browser and run a search for Knox. Than delete.

Also I've deleted most of these myself.. this list is kinda old too.. though it should still be fairly accurate..

AllShare ControlShare Service -- (com.sec.android.allshare.service.controlshare)

AllShare FileShare Service -- (com.sec.android.allshare.service.fileshare)

Amazon -- (com.amazon.mShop.android)

Amazon -- (com.amazon.mp3)

Backup Assistant -- (com.samsung.vmmhux)

BlurbCheckout -- (com.blurb.checkout)

Caller Name ID -- (com.cequint.ecid)

Email -- (com.android.email)

Google Play Books -- (com.google.android.apps.books)

Google Play Magazines -- (com.google.android.apps.magazines)

Google Play Movies & TV -- (com.google.android.videos)

Google Play Music -- (com.google.android.music)

Group Play -- (com.samsung.groupcast)

Help --(com.samsung.helphub)

HP Print Service -- (com.hp.android.printservice)

Kies -- (com.sec.android.app.kieswifi)

Mobile print -- (com.sec.android.app.mobileprint)

Mobile tracker -- (com.android.settings.mt)

MobilePrintSvc -- (com.siso.app.generic)

MobilePrintSvc Backend -- (com.siso.app.genericprintservice)

My Files -- (com.sec.android.app.myfiles)

S Memo -- (com.sec.android.widgetapp.diotek.smemo)

S Note Provider -- (com.sec.android.provider.snote)

Samsung account -- (com.osp.app.signin)

Samsung Books -- (com.sec.readershub)

Samsung Cloud Data -- (com.sec.android.sCloudRelayData)

Samsung Cloud -- (com.sec.android.scloud.quota)

Samsung Games -- (com.sec.android.app.gamehub)

Samsung Hub -- (com.sec.everglades)

Samsung KNOX -- (com.sec.knox.containeragent)

Samsung Link -- (com.sec.pcw)

Samsung Music -- (com.samsung.music)

Samsung Push Service -- (com.sec.spp.push)

Samsung SBrowser Bookmark SyncAdapter -- (com.sec.android.sCloudSyncSBrowserBookMark)

Samsung SBrowser Tab SyncAdapter -- (com.sec.android.sCloudSyncSBrowserTabs)

Samsung SNote SyncAdapter -- (com.sec.android.sCloudSyncSNote)

Samsung Syncadapters -- (com.sec.android.sCloudSync)

SamsungHubUpdater -- (com.sec.everglades.update)

Setup Wizard -- (com.sec.android.app.setupwizard)

Story Album -- (com.samsung.android.app.episodes)

Story Album Widget -- (com.samsung.android.app.storyalbumwidget)

Travel -- (com.samsung.android.tripwidget)

TripAdvisor -- (com.tripadvisor.tripadvisor)

Voice Recorder -- (com.sec.android.app.voicerecorder)

Weather Widget -- (com.sec.android.widgetapp.ap.hero.accuweather)

Wi-Fi Direct -- (com.sec.android.app.FileShareClient)

Wi-Fi Direct share -- (com.sec.android.app.FileShareServer)

Yahoo! Finance -- (com.sec.android.widgetapp.ap.yahoostock.stockcloc k)

Yahoo! News -- (com.sec.android.widgetapp.ap.yahoonews)