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Question: How to change Pixel's color profile?

Answer:

• We need to root -> install custom kernel -> modify color profile.

For Root: relevant resources: XDA, XDA, XDA

• First we need to Unlock the bootloader, follow this guide to unlock boot loader: GadgetHacks

• Second we need to install TWRP following this guide: GadgetHacks

  • VERY IMPORTANT: TWRP ZIP and Boot Image Patcher ZIP in step 3, 4 should be put in the phone's Downloads folder.
  • VERY IMPORTANT: In step 9 Flash TWRP & the Boot Image Patcher, If the phone doesn't prompt for password, don't freak out and wipe everything like an idiot, instead keep repeating step 8 Boot from the TWRP Image File until it show up, it a timing issue as quoted in XDA.
  • NOTE: All the links in the article seem up-to-date, if not check the TWRP link above for newest version, America and Europe is the host only, not the phone region, don't freak out like an idiot.

• After install superSU (get root) (the link in the guide above up-to-date, check newest version here XDA), update necessary apps, then we need to do a NANDroid Backup, follow this guide: GadgetHacks.

• [Optional] we can copy the whole TWRP to PC for back up, see HowToGeek, AndroidExplained. This can be done via USB cable, no need for adb.

• Next we need to install the ElementalX custom kernel (XDA) and flash it via TWRP. Leave almost all option to stock.