Knesvich's and Briey's Brigades in my army are supported by two guns each of 3 pound Regimental Infantry Artillery. I've given my artillery slightly larger bases than most rules suggest, just because I felt it looked better to give the miniatures a more realistic amount of space - I wouldn't like to be standing where most miniatures stand when a cannon is fired!
The guns are from Warmodelling and were painted in a 50/50 mix of Ochre Verde (Vallejo) and Yellow, then given a light wash of GWs Agrax Earthshade. The crew are a mix of Warmodelling and Blue Moon artillery figures. The uniform of the Artillery of this period seems to be contentious, especially the colour of the coats. I've given them a worn earthy brown colour and varied the shades between some of them to give them a campaign look. Hopefully is close enough to be reasonable accurate.