CMP FAT cab 13

[chippyrail]

Can anybody help me with the date for the first CGTs' with cab 13 into service. I am building the Mirror Models kit & have nearly finished so looking at camo versions. As far as I can tell until April '43 the official colour was Desert Pink with disruptive of either green, black or dark brown. I would like to use one of these or the previous colours if the vehicles reached North Africa before April '43. After this I understand that in Tunisia the painting for Italy in Light Mud & black was started but many vehicles were in older camo colours in Italy for quite some time.
So if someone can tell me please when these vehicles came into service I would be grateful.
Regards Howard