http://wnet.suomi.net/kotisivu/harri.kaarre/88series.html
http://tanxheaven.com/fedcol/88mmflak36-37/88mmflak36-37.htm
http://efour4ever.com/88.htm
There are also quite a few books that will help you out, but unless you are looking to specialize your library, these can be pricey.
An internet search of 88mmflak or 8.8 cm flak etc. will give you plenty of resources. You'll just have to take the time to wade through all of them to find the reference sites, from gaming sites, and other internet drivel.
Most likely this late, you'd have the base coat of yellow with a white wash. Give the equipment in a tv sereis some lattitude, since it may have been collector owned. Much easier for a bunch of grips to clean off some whitewash before giving it back to its owner than to have an owner allow a production crew to paint his museum piece yellow and then white wash it. Camo was crew subjective and they did what ever worked. Using available whitewash materials and even mud to break up outlines. Photos shot during the Ardennes campaign show both bare ground and snow. If it is a war torn traffic area in a town, you'll get a build up of mud, snow, slush, etc. So factor that in your "picture". Using the BoB reference, snow covered ground with mud streets would make some great possibilities.
Have fun and remember to pop us a few pics
Mike
"Imagination is the dye that colors our lives"
Marcus Aurellius
A good friend will come and bail you out of jail...but, a true friend will be sitting next to you saying, "Damn...that was fun!"