For what its worth, my recollection is of all black cockpits but it is some time ago.
Dora-9
I guess VH-MMS used to be WG478.
I am sure you know where it has been and when but just in case, here is an extract from my log book for 1973. Your photographs show it looking much better than it was when it took me on my first solo. If memory serves it was from Church Fenton to Elvington and the ground was covered in snow.
Please let me know when you grow tired of it!
XN593