How to make an edge-coloured origami dodecahedron

Download my two colourings of the dodecahedron graph.
https://www.dropbox.com/s/x1sn5tqi4ar...
https://www.dropbox.com/s/3rpsbitya3n...

The site “What’s on my blackboard?” has a great post on colouring dodecahedra, which I found very useful.
https://whatsonmyblackboard.wordpress...

Here is the Petersen Graph on wikipedia.
https://en.wikipedia.org/wiki/Peterse...

So far I have been sent ZERO solutions to the “Why those six pentagon edge-colourings” challenge. Watch this space!

CORRECTIONS
I sometimes say things like “three colouring” without specifying that I’m talking about colouring the edges, not the vertices (which are the default option). But I hope it is clear from context.
Let me know if you spot any other errors!

Music by Howard Carter
Design by Simon Wright

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com/
Maths book: http://makeanddo4D.com/
Nerdy maths toys: http://mathsgear.co.uk/