Hi Jules,
the following links give you a good idea of the colour scheme used in the SCW and for that matter, Africa, Albania and Greece. I have one reference, that I cannot find, that shows verticle stripes over the base colour that was a trial scheme used in Albania.
http://www.missing-lynx.com/gallery/axis/cv3sz_... http://www.ww2incolor.com/forum/showthread.php?....
http://www.afv-news.com/wp-content/uploads/2010... As you can see, pretty much a terracotta type base colour with grey green camo on top. The following article gives a guide on colours.
http://www.matadormodels.co.uk/tank_museum/xcam... For the flamethrower tankettes, I just made mine simple grey green.
For my Italians, I used a mix of standard grey green uniform for one battalion, with the light weight blue fatigues for a CTV battalion. Other sources show images of Italians in typical desert uniform in a sandy colour. I used the following FoW article as a guide to the above.
http://www.flamesofwar.com/Default.aspx?tabid=5... Hope this helps.
As for info on the helmet, I can't help you there. As for vehicle tows, I imagine anything that came to hand would have been used.