You can modify the material of an object by selecting the object in the 3D Viewport and modifying its Material Properties option in the Properties panel.

Once in our Material Properties, we will need to create a add a new material by clicking the Add New Material button. Your new material will be given the Material.001 by default and will be added to your objects Outliner, nested in the objects Mesh Data.

Your material can be modified by changing the values under the Surface tab. In our example, we were able to change the Base Color to Hex FFD700, Metalics to 1, and the Roughness to 0.35 to give Suzanne a gold texture.