Thanks to all who contributed here (and in other threads) on interior lighting upgrades. The OEM setup is truly abysmal. I opted to install the ArcLight White/Red LEDs, starting with the Rear Hatch Lights. I also decided to backstop the process for full reversal: I ordered a pair of replacement Hatch lights ($22 each) and a replacement Dome light ($34), from ToyotaPartsOverstock.com. So far, the hatch lights are in and work and look awsome. Waiting for the Dome conversion unit (on backorder).