Info: The BSDF acronym means Bidirectional Scattering Distribution
Function, which identifies the mathematical function that controls how a
surface scatter light.
If you have to create materials with only a simple color, add the Diffuse
BSDF as a shader. That shader has a color picker, and you will be able
to get the color you want and use it for any selected 3D object (Figure
5.4).
Figure 5.4 - Diffuse BSDF material
Notice how each field in the material options has a colored circle on the
left side. Those circles and colors identify the type of data you can use
for each field. A green circle means a shader, and a yellow one means