Enlarged diagram on f68v2-f68v1?

[ololololo]

Maybe there was no so much color to work with or they had to be concidencially blue?

I really think so. Given that the overall style of the book is "substandarted" (compared to other manuscripts, it seems simpler and more minimalistic in design), this seems plausible. On f69, you can see that the author also uses green. This suggests that he had an abundance of green (presumably for plants) and blue (which is used extensively).

Very little incidence to be cribs i think, there should have been more.

These words are also found in other charts, so they may not mean anything in our case.

the other posibility in this idea is that something changes when zooming in?

It is unclear how these changes manifest themselves. I could not find any connection other than the superficial resemblance. I also don't understand how the rays are distributed on f69r.

Maybe the reason why the zoom out have 28 "tubes" and the zoom in has 45 "tubes" is because the zoom out was just a figurative drawing and the real number of lines was the zoom in version. Or the Zoom out has the categories and the zoom in as the sub categories or something like that.

Everything is possible