N-P
To answer your question, the lace trim on the hats didn't really have a set issuance. Some would have it, others not. Probably more likely for an officer and certainly more common later in the war. By then, with uniforms supplied from France, some patriot commanders would try to out do each other with the uniform embellishments, like the hat lace.
As to the color on the regimental coats, that is much more complicated. Before 1778, there was a huge array of colors and combinations for the coats and thier facings (the cuff and lapels). Originally, Congress chose a brown coat with red facings as the uniform. However, after thousands of uniforms arrived from France, the official coat color was changed to blue.
By Oct. 1779, there was an order issued by Gen. Washington for the following in reference to the uniforms:
New Hampshire, Massachusetts, Connetticut, Rhode Island-blue coats with white facings
New York and New Jersey-blue coats with buff facings
Pennsylvania, Delaware, Maryland, Virginia-blue coats with red facings
The Carolinas and Georgia-blue coats with blue facings and white lace trim on button holes
While this was the order, compliance was not accomplished for many regiments. Even in the last couple of years of the war, some Continental troops had no coat, only a hunting shirt, just like K & C's militia figures.
So far, K & C has followed the uniform order of Washington with thier releases: the 1st New York had the blue/buff coat and the upcoming Rhode Island in the appropriate blue/white combo. The upcoming artillery set is correct too, in that they mostly wore the blue/red coat as well, with some gold lace trim around the button holes.
Noah