As I settle back into a monochromatic existence, once the last of the colours drain out of me and I can once more think objectively, I am actually glad that I had allowed the colours to come in at the start. I had nearly forgotten what it was like to see, nay, to experience the world awash in brilliant hues. This time round it really was a fair and equivalent exchange; the ups were really up (the Japanese got it right with their use of kanji: 最高 saikou) and the downs were quite down, but rollercoasters end where they begin (usually).
But I think I've had my fill of rollercoasters and kaleidoscopes for now, let me go back and hide in my fortress of greys for a while.
P.S. despite my best efforts, the tarot reading was spot on.