[Nexus 10 Themes and Apps] 3DSammy:
This thread is less about what apps you use but more about what you added to perfect your favourite custom ROM experience.

Please post your favourite custom ROM and how you enhanced it.

With the Purity ROM I add the following:

Trinity Ten (4.2/4.3) Kernel

Although I do not use the app myself, Trinity Ten has a specific app to tweak the settings "Trinity Kernel Toolbox"

Here's a quote on the recommended settings, suggested by an experience Trinity kernel tweaker:

"I suggest using 1.2 Ghz max CPU and letting the 620 Mhz OC of the GPU do the work. I also like SIO and a 512MB read ahead and Interactive governor. ...you should find the 1.2 CPU to be just as snappy in general use as 1.7 GHz. It will also play videos etc just as well and stop the CPU hitting 1.7 for no reason. Stops thermal throttling in games..."

Compliment Purity's expanded desktop option "Status Bar visible" with:

LMT Launcher to provide a PIE menu

Smart Statusbar+ with "Auto Popup Filter" set to "On" to provide an auto hide statusbar

Take the Nexus 10's speaker audio to a whole new level with ViPER4Android Audio Effects FX:

I originally tried ViPER4Android to resolve a lack of bass from my ear buds but tripped across its ability to enhance the Nexus 10 speaker audio. The app not only adds gain (volume) but widens the L/R stereo field and ambience. I was so pleased with this discovery that I almost never use my ear buds unless its absolutely required (e.g. at work). I did not find that Purity's included DSP Manager could do what ViPER4Android can accomplish.

With v2.3.1.1 of Viper4Android I use these settings:

When installing the driver for the first time I selected the highest quality option. Despite the warning message I haven't noticed any negative impact on performance. This is likely due to the overall power of the Nexus 10.

Under the "Phone Speaker" tab:

Master Power->V4A-SpeakerFX is powered on (checked)

EXTRA LOUD->Enable eXtra-Loud is enabled (checked)

EXTRA LOUD->Select Effect Strength (slight)

Compliment Purity's "Dark UI" setting with:

Slim Aroma's selectable Gapps to choose only the Google apps you want to use and their "Black themed" variants

Team Blackout for "Black themed" versions of common Android apps (e.g. FlipBoard) not included in Slim Aroma's selectable Gapps zip

Privoxy filtering proxy to automatically "Black theme" most web pages by inverting any white backgrounds with black text leaving the images untouched

Universal init.d to auto start various apps/daemons at boot time

Busybox crond (included with Purity ROM) for cronjob job scheduling

Here's a link to a cron Job Generator. It makes life easier for those not familiar with cron

OBackup - Nandroid backup GUI to Online Nandroid / Nandroid Backup without re-booting into recovery[CWM + TWRP + 4EXT]

Installing OBackup adds a GUI to backups settings, auto installation of Online Nandroid, a backup schedule, backup retention limits with auto delete and optional uploading to Dropbox, Google Drive, or any FTP

If you do not use OBackup then make sure you also flash partition detection tool as its required on the Nexus 10 to avoid "/boot" being skipped during backups Google Nexus 10 Download

FolderSync to automate cloud and CIFS folder/file synchronization

Invaluable when used to automate off device storage of your Titanium Backup folder and/or onandroid backups

GMD Gesture Control for custom gestures reducing steps to launch apps and/or trigger specific actions.

Although LMT includes gestures controls I have not confirmed if anyone has the feature working on a Nexus 10

GMD also includes a more versatile dock than Nova Launcher (e.g. ability to add Script Manager (SManager) script launch widgets, 5 docks with 5 positions)

USB OTG Helper (Full NTFS support, FAT, Ext2/3/4 if kernel supports them and exFAT support [ See FAQ to enable])

Note: after applying a Purity ROM update I needed to:

Open the ViPER4Android Audio Effects FX app and re-install the ViPER4 driver

Start the Universal init.d app

Run the "Test of ROM supported init.d" then reboot

- This step recreates a symlink to a "/etc/init.d" directory from "/system/etc/init.d"

After the reboot turn the "Universal init.d" option ON

Re-copy your boot scripts to the "/etc/init.d" directory

Reboot one more time

I hope you find this thread informative and encourages others to enhance their install whether you have rooted stock or using one of the many excellent custom ROMs.