i was on SF mobile yesterday, and i missed this.
ime, even with a proper camera, which i have used a few times, and certainly with camera + on iphone, which i use 100% of the time now, getting proper colors is almost impossible.
i adjust any combination of contrast, brightness, warmth and saturation in photobucket with about 98% my fit pics. getting a raw pic that is truly representative of the irl colors is super rare. hell, even in irl your tie looks different depending how the sun is shining.
it takes about 5 or 10 minutes, and i usually do it at night, but its well worth it imo.