yes.
The colour of the disc indicates what the blade is made of and covered with.
https://www.britmodeller.com/forums/index.php?/topic/234918219-propeller-markings-on-spitfires-and-seafires/
"Regarding the markings within the coloured disc I can add that the Horden-Richmond Aircraft one shown in my first response above with the green disc and HRA text was made of Hydulignum with a Rotoloid covering and Armoured Sheath as identified by the disc and letters HRA.
Jablo Propellors Ltd blades had pink discs while Horden-Richmond Aircraft Ltd blades had green ones, Rotol Airscrew Ltd blades had white while Yellow ones were seen on The Airscrew Company Ltd blades. The lettering within the disc would vary which would indicate the Material , Covering and Sheath of the blade so marked."
the linked Key forum thread is broken, but I know I had posted the images here on occasion.
OK, found it
https://www.key.aero/forum/historic-aviation/103145-propeller-markings
and
https://www.key.aero/forum/historic-aviation/79363-questions-on-spitfire-propellers-merged
Ah, OK.
Now... believe it or not I'm not that interested in Spitfires, but you end up absorbing info on here by osmosis....
But, there are different spinner makers, and they used different locking systems.
a Key type with one slot, and one with usually two screw between each blade.
The only ones I have made a bit of a study are Hurricane spinners,
https://www.britmodeller.com/forums/index.php?/topic/235078582-hurricane-rotol-spinners-the-cm1-vs-es9-quest/
there did not seem to be any logic to what was fitted, except one type was used initially, and the other became more common.
I'm not about to go on an image hunt, but I suspect you may find the same applies to Spitfires, this goes for blade types as well. It does on Hurricanes.
I honestly don't know. I suspect neither do Airfix, and some of these are just 'generic' items, or appropriate to maybe the XIV of "XVIII" kit...
Airfix - research. I raise you the wing stripes I mention above.
The 2nd part may reveal some of these, especially regarding the two Mk.XII batches, EN*** and MB*** IIRC.
Some of it maybe just that in reality it didn't matter particularly, say the type of blade or spinner used, and it was what was available.
It's late, and I really don't want to go down the rabbit warren of image hunting and detail checking, say the above points, but the above may give you a few pointers as to how far you want test your sanity, I mean research facilities and abilities....
pidä hauskaa!
(I honestly hope auto translate is working)
T