I am trying to be impartial, yet I would like to emphasize what gvans says here.
I see the effect of color in the choices that people make during the voting.
For example: kussaka's final version that he presented has the very subdued grey and is getting not as many in the second round,
whereas the very same design in the first round in another color, got more votes:
I think, this is due to the effect of color.
I also think that the good votes that figroll's design is getting, is greatly to due to the buoyant colours.
So here is a question to gvans:
How about giving us a few bigger versions of your design, in multicolour?
Maybe try figroll's colours, just to compare.
I am thinking of the small multicoloured versions that you posted in the original post:
Maybe some of us will realize that design that can change it's colours like a chameleon has an advantage over one that is cast into it's colours?
Bottom line: think of the design separate from the colour, when you vote.
Pentamon