Actually I started a thread mentioning the dark right side of the LCD... now that I've gotten used to it, it doesn't bug me as much. The 'rainbow' effect I think is just a side effect of the touch-sensitive layer on top of the LCD; after using a Samsung A800 phone for about a year, that doesn't bug me in the least. That phone has this super-thick clear plastic covering the LCD giving it a "rainbow oil spill" effect!