Not quite to the desert theater topic, but here are a couple of pages with colour photos of Mosquitoes in the Med.
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De Havilland DH.98 Mosquito Color Photographs Part I"
Those are great, the US Mossies illustrating the brightly coloured bits that were done to avoid getting shot down by their own side, given the type was not prevalent in theatre.
The first PR Mossies were a pair of specially converted PR.II that went to 60 SAAF in Feb 1943. They had been sent out to Egypt for weather trials but were hijacked and converted for PR work. These were in their original night NF.II night fighter camouflage but were repainted later.
The first PR Mosquitoes in the Med theatre were 540 Sqn, RAF aircraft. 540 Sqn had detached PR Mosquito Mk.IVs to Malta and Gibraltar from October 1942, although the unit used Malta only as a staging post, being based at Leuchars with a detachment at RAF Benson with a semi-permanent basing at Gibraltar. The aircraft operated from Gibraltar to cover the advances following the Torch landings in November and were often pursued by Vichy French fighters. From Malta, the aircraft were sent to get images of the Italian naval bases at Leghorn, Pola, Spezia and Fiume.
683 sqn began operating PR.II in May 1943. 256 then took a detachment of NF.XII to Malta in July 1943 with the rest of the squadron following in Oct.
683 Sqn operated Mosquito
PR.IVs from RAF Luqa, Malta from May 1943. There were only four F.IIs converted into PR.IIs, two of which operated with the previously mentioned 540 Sqn, the other two were not listed as operating with 683 Sqn. The unit was based in Tunisia following its departure from RAF Luqa and then San Severino Italy, with detachments around the traps.
680 Sqn, RAF, was another PR unit that was based in the Med, in Egypt from 1943 and was equipped with Mosquito IXs and XVIs from February 1944, which were detached to Italy and Sicily. These aircraft wore standard PR blue, but had garish fin markings as well, one particular aircraft that is often covered in profile illustrations has a white fin with red diagonal stripes and yellow spinners. This was because US fighters in theatre had attacked the aircraft, mistaking them for Me 210s and 410s.