Texturing only one face?

This problem has been really getting on my nerves ever since i got my other problem fixed with the invisible room. I can walk into my room, but it’s really hard to see since it’s all the same color! I was wondering if i could texture only one face (the floor in my case) in Unity 3D. And if this isnt possible in Unity 3D, how about in Blender? I also recently got that and am NOT really good with using it. That’s one reason why I’m asking all these questions :/. If anyone could help me out, please do so. Thanks :smiley:

first of all, to make geometry looks better add directional light. this will make geometry looks volumetric with different lighting effect.

second, to color only one face you need to have another material at this face. color can be applied to whole material, it means color can be applied to all faces that uses this material. better to change material set in 3d softeare.

third, if your faces textured so that each face has it’s own texture part, you can color it using a texture. but texture also better to paint in 3d software