How to make an edge-coloured origami dodecahedron

Download my two colourings of the dodecahedron graph.
www.dropbox.co...
www.dropbox.co...
The site “What’s on my blackboard?” has a great post on colouring dodecahedra, which I found very useful.
whatsonmyblack...
Here is the Petersen Graph on wikipedia.
en.wikipedia.o...
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: standupmaths.com/
Maths book: makeanddo4D.com/
Nerdy maths toys: mathsgear.co.uk/