File this one under d'uh...
In searching for the Seven Years War uniforms of the two Mecklenburg duchies I was drawing a virtual blank. I mean not even Knotel.. That's because the two Duchies are not found under Mecklenburg-Schwerin and Mecklenburg-Strelitz that would be two darn easy, nope they are under Schwerin-Mecklenberg and Strelitz-Mecklenberg for the Seven Years War Period and Mecklenburg-Schwerin and Mecklenburg-Strelitz for the Napoleonic Period. Who thought that one up.
Prussian Style Uniforms.
Blue Jackets - Red Turnbacks, Cuffs and Collars. White small clothes, belting, and hat lace. Black Gators.
Now to find the Regiments names.