Of course they don’t. The developers are not only going to control what we get and when we get it, but also whether or not what we get is useful.
I expect to see purple the least and not for a long time, because the devs tightly control magic gains. Without Zuul Goth, darkstone is the only magic kingdom that use eligible for power level 10 currently. Purple will be the deed version of ascension orbs, and probably priced highest in flash offers.
They’re likely to make sure we get what we needed after we need it if we don’t pay for it, and what we need the most dead last