World of Warcraft – What’s the Difference Between Different Quality Pets in WoW?

From Wowpedia:

Skin color

All original orcs were brown-skinned; from bark-like brown to reddish-brown. However, their bodies react when exposed to warlock magic; though the nature of this change is somewhat different in other fel-touched races. The nature of orcish fel magic means that all nearby orcs, including those who avoid warlock magic, take on a green pigmentation and gain body mass (though why the Mag'har are much bigger than Durotar orcs in World of Warcraft is unknown). This color change appears to be genetic as Thrall, who had little direct exposure to warlock magic until recently, has had green skin from birth.

As this corruption progresses, the orc's eyes may become flaming orbs of red or green and their skin will soon change from green to scarlet, transforming them into fel orcs. Through certain rituals, this state is reversible. However, should the orc continue to drink large amounts of demonic blood, they enter the final irreversible stage of transformation and mutate horrifically; growing additional fangs and erupting with horns from their backs, arms and hands.

Currently, orcs of the Horde have a wide variety of "natural" pigments, ranging between shades of light green, dark drab olive, brown to grayish brown.

From least time and tokens to most:

1. Purchasing the dungeon and PvP drops off the Auction House. They're going for anywhere between 100-1000g on my realm's AH, but literally takes seconds to do and you get anywhere between 4 to 10 tickets per completion (each item has its own value in tickets. These can be found on Wowhead). Obviously not the most efficient for gold, but a winner for time and tokens. These can only be completed once per week, so once per Faire.
2. The profession quests. These reward five tokens per completion, if memory serves, and you should be able to do six (two primary professions and four secondary). None took over five minutes to complete and most just require you to go to your capital to purchase the required items for a few copper. These are also weekly, so once per Faire.
3. The daily quests. At the rate of one ticket per daily quest, these reward five tickets in the same time it takes you to get more tickets from the other options.

Obviously your order will be different if you are gold limited, but for time and token investment that is the best order.