2. Open the material editor. You can open it by pressing the M key or selecting MaterialEditor in the rendering from the top menu bar.

3. In the Material Editor, you can create a new material or edit an existing material. Select a shader or create a new shader.

4. In the Material Editor, find the color attribute. This is usually an option called Diffuse or Base Color.

5. Click to select a color attribute, and then adjust the color in the color selector. You can change the color by sliding the slider on the color selector or manually entering a color value.

6. The method of adjusting the color of warm grey coffee can refer to the following values: red (r) is about 157, green (g) is about 138, and blue (b) is about 107. This is only a rough reference value, and you can fine-tune the color value according to your actual needs.

After completing the above steps, apply new materials and see the rendering results. If you need to adjust other properties, such as lighting, reflection, etc. ), you can continue to work in the material editor.