When the 1st Canadian Infantry Division and the 1st Canadian Tank Brigade sailed from Scotland to Sicily, to take part in Operation Husky, they were accompanied by two British Artillery Units. One was the 93rd Bty of the 70th Medium Regiment RA, while the other was the 142nd (Royal Devon Yeomanry) Field Regiment (S.P.) RA.
I found some pictures of the 25-pdr (SP) Bishop guns in Sicily belonging to the 142nd Regt on the IWM site, dated the 27 July, 1943. From the photos one can see that the guns were not repainted before they left the UK. The question is what colour are they, Khaki Green No. 7?