Double the fun?

When reading Andrew's musings about double layers and colour, I remembered some ideas I had many years ago. I think I did weave samples, but I can't find them - so maybe I never did?

Anyway, as you may have noticed, I like playing with colour... :) The basic idea was to have two separate layers, one colour per layer, and then slowly changing the appearence of the colours, and in the end getting the the opposite.

So I started to play.... here are some ideas:

These are threaded on 8 shafts, with every other end blue, the other red. The weft order is the same, but, as the weaving progresses, the wefts not always alternate in the layers.
Both start with bringing one end of the other colour to the top, then one pick, next part takes 2 ends to the top etc. Which ends/pick are brought up differs in the two examples. (And yes, I think it would be better with less contrast - gold and yellow, perhaps?) - click to enlarge:

Another approach: here, just the warps that change place - threaded on 16 shafts.
To the left (but needs, obviously, some more work) "going both ways", to the right are both faces of the first half.

(The left needed a lot more contrast to even show at this size...)

Hmmm - perhaps: two warp colours, but only one weft? Would make it a tube, of sorts - but that would, perhaps, make it more useable? Hmm... perhaps I should try it IRW (In Real Weave) too?