For what it’s worth, I am sure people will be tracking the rate at which deed tasks and flash offers appear, and break it down by color. Given that four of the five magic kingdoms are purple (Karakoth, Darkstone, Silverglade, and Blighted Lands—Zhul’Kari is the odd one out with green), we should expect grumbling if the rate of purple deeds falls near the bottom by color. And expect more grumbling if the rate of purple deeds in flash offers is near the top.
This is perfectly possible according to random processes, but we already know that some people would see an ostensibly-uniform distribution and claim that a thumb is resting on the scales to skew results in players’ disfavor. (That is, it might prevent some grumbling if the devs skewed the results towards purple even if the RNG wants otherwise. Just enough to forestall pitchforks and torches from the restless villagers.)