Realistic Architectural Visualization with 3ds Max and mental ray 18. Click on the G and B button. By default all colors are selected; selecting the G and B button freezes the Green and Blue curves, allowing you to edit the Red curve. 19. 20. 21. 22. Select the right point of the Red curve and move it to a value of approximately 2.31. Click on the Zoom Extents button in the Color Map area to see the entire curve. Unfreeze the Green curve and move the right point on its curve to 1.208. Unfreeze the Blue curve and move the right point on its curve to 0.619. Color Map editing