Unity 2D Is it possible to apply a texture to a sprite?

Question

Unity

I have a Player object that has frame-by-frame animations with sprite changes attached to it. Right now I'm doing a skin change for my game, I did a basic color change via Color in the Sprite Renderer. I want to add different textures to the object and so that I can change the blending options, like with color, so as not to manually redo all the animations in Photoshop for each skin. Adding materials to the Sprite Renderer doesn't work at all as I want it to. Is it even possible to add textures to 2D sprites? Maybe some special material shader settings are needed?