Hi Mates
I have an extensive library on WWII allied aircraft (an old hobby) and have looked up the Shark Squadron. In Arco-Aircam Aviation series No. 3 they have some pretty good black and white pics of the shark mouth mustangs. Their paint was pretty beat up as they operated out of make shift airfields in Italy.
The book has the picture you show above plus some others up close where you can see the "beat up" paint jobs. The book also includes some colour layouts so you can see the paint schemes.
If you would be interested, I can scan these and send them to you. However, for some reason, I am not allowed to post attachments in this BB. Perhaps have not put up enough messages. I have been in AH since Beta and WB a lot longer than that. Whatever.
Also, No. 112 Squadron RAF flew the B and the D model Mustangs with the shark mouth.
Cheers
Majors
249RAF
Oldest Yank in the RAF
May be the oldest in AH