1. In the Contents, select the 3D Surface layer.
2. In the Properties, click the Overlays tab.
3. Change the Color modulation to Use overlay color only. 

1. In the Contents, select the 3D Surface layer.
2. In the Properties window, click the Lighting tab.
3. Specify a more vertical light position, such as setting Vertical (degrees) to 90.
4. Click on the Ambient color box to change the color from black to gray if desired.

See also:

• Make specific colors in an image or Base(raster) layer transparent in Surfer
• Create a shaded 3D surface without colors in Surfer

Updated April 2020