There's a thread that includes a nice photo of L9767 here:
Hi all Quick question or two if I may, I've this is the stash and I'm in the process of gathering a few bits/extras whilst I work on my current build/s, could do with confirming a couple of bits around her fit in mid 1940. Not sure why but the oft forgotten Norwegian campaign has always intereste...
The contributor "iang" is an expert in FAA markings during WW2. If he says L9767 was still in overall silver/cerrux grey finish while aboard HMS Warspite, you can take it to the bank.
Given the simplicity of the scheme, it ought to be readily achievable using generic decal sheets for roundels and serials etc.