How to change the colors of a two-color texture? I want to create paperhanging for my interior scene, and I want the Pattern on my Wallpaper to be Black and everything else to be its normal color, I tried but everything I can make is exactly the opposite what I want.
Set up the nodes as pictured below. Add a RGB to BW node to make your texture work as a mask for two Diffuse shaders. Set up the colors for Diffuse shaders. 


Flip the input sockets of the Mix Shader for a reverse result.