Hi Danny: If you are talking about patterns you are designing, there usually is a function in the program you are using to change the color of the "stroke" to what ever you want and then when you print it your pattern will come out that way. If you are talking about patterns you download, such as Steve's, I don't know about that. Let me know what you find out.
I downloaded "Inscape" a while back. I've had a lot of fun designing word art but haven't got much father than that. There are some turtorial online for Inkscape. The one with Jim Mex on the Scroll Saw Workshop forum is pretty good. And there is another one at Scroll Saw Village by Travis that is really good. Good luck and have fun.
Terry
terrysscrollshoppe.blogspot.com