Change color settings on stock rooted?

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http://forum.xda-developers.com – I've always loved stock but flashing it reminded me of the biggest gripe I have with it, its faded colors, which is the reason I flashed Trinity kernel. Anyways, how can I change my color settings/gamma etc, with stock rom / kernel? Is it impossible without custom kernel? Sent from my Galaxy Nexus using xda premium (HowTos)