Azrich wrote:... I have a hard time believing a pet food company would use harmful dyes...
I have some land in Florida I'd like to sell you

You could get a quick catch-up here:
http://en.wikipedia.org/wiki/Food_coloring And you could google "food coloring" and "dye in food" for a bazillion other sites that might help you believe. I don't use Pretty Bird, but I hope their dyes are natural. I doubt they're the reason for your bird's near-death experience.
Here's my flock diet, often posted: If our birds would eat enough variety of vegetables and greens to get all the nutrients they need, I agree with many others who feel that fresh food would be better than pellets. But before I retired, I was gone 10 hrs each weekday and found pellets a necessary part of the flock diet. Now, almost 7 yrs retired, I still feed some pellets, nuts, and seed in the morning, then fresh veggies, cooked grains, fruit, and sprouts in the late afternoon. My greys get a tablespoon of seed (Volkman hookbill), a tablespoon of Roudybush pellets, an almond, and a couple fat sugar snap peas.
I serve fresh food finely chopped in brown rice and quinoa, all organic, home grown except in winter. Since quinoa is high protein, I mix one part of it with 2 parts of rice. As you may know, but for the benefit of newcomers reading along, the best vegetables are the ones with red or orange color all through: carrots, red peppers, sweet potato, and beets (feed sparingly due to high sugar). Squash and cauliflower are good too. And greens that are high in calcium and vitamins A and C: broccoli, collards, dandelions, kale, bok choy, mustard, kohlrabi, carrot tops, spinach (only if organic and sparingly even then), arugula, and chard. Parsley is controversial. I avoid it in an abundance of caution. Lettuce (other than Romaine), celery, corn and peas are very low in nutrition and take up space in the crop, killing the bird's appetite for the healthier foods she needs. Because the chopped veggies and greens are so tiny and the grains are sticky, while the birds are eating the grains they love, the veggies are getting eaten accidentally! YAY!!!
While cooking a 3-day supply of grains, I drop in a gelcap of beta carotene from the healthfood store and a little red palm oil. Then I stir the minced veggies and sprouts into the cooled grains. My greys get 2-3 tablespoons and eat it all about 2/3rds of the time. I put a half teaspoon of Stonyfield plain, non-fat yogurt on the side. It's good calcium and, if ever meds need to be given, it's an easy way to dose them w/o restraint. I don't feed much fruit, usually just a half dozen pomegranate arils and a slice of banana about 1/3" cubed.
I love talking diet, so if you have other qxs, just ask!