The National
Archive recently released the film "Firing 155mm Howitzer (1942)" , which shows some incredible footage of M4A1 Sherman DV's of 2nd Armored Division in Africa. Here are two screenshots:
Note the yellow turret top, which were used by 2nd Armored Division. So far I've seen no color reference of 1st Armored Division Sherman tanks (apart from the 1943 Life photo's found here), which played a much bigger role in the Tunisian campaign. Feel free to share any other real color references you've found.