Is there a way to download the shading for an object?

Hi there, so I'm currently working on learning how to recolor objects and I get that you can play around with the hue and saturation of an existing diffuse to 'change the colour' but what would I do if for example I wanted to completely remove a wood texture? I'm aware that obviously if I just upload a new texture that is just the solid colours in the correct places then the object with just look flat and weird. Is there anyway I can sort of 'detach' the shading from an existing texture which I've exported?? Would appreciate any suggestions