kwaw
For others; think of white light as the source, the 'elaborations' are different colours coming out of a prism. Look closely, one cant really say where one colour changes into another.
But you can tell yellow from indigo cant you? We can say, in one way, they are all originate from the one source, that is the white light...
Yeah, was thinking about the old rainbow analogy myself )
Not read every post in thread, but notice that some have linked the mitten to masonry (??) -- I doubt it, but we may note that the Saltire*, among other things, is a symbol of the Scottish Rite in freemasonry. (I tend to think allusions to masonry in the deck are overstated, and often-times somewhat tenuous -- but there is some, the B&J of the priestesses pillars being the most obvious example, and this may be another.)
edited to add: Saltire, the tumbling cross, 'X', on the shield.