Select the Eyedropper tool and click a color in the preview image.
Click the Brush Color box to open the Adobe Color Picker to select a color.
To paint without blending with the color, lighting, and shading of the surrounding pixels, choose Off.
To paint and blend the strokes with the lighting of the surrounding pixels while retaining the selected color, choose Luminance.
To paint and blend with the colors, lighting, and shading of the surrounding pixels, choose On.
To paint continuously, automatically conforming to the perspective from one plane to another, open the Vanishing Point menu and choose Allow Multi-Surface Operations. Turning this option off lets you paint in the perspective of one plane at a time. You need to stop and then start painting in a different plane to switch perspective.
To confine painting to the active plane only, open the Vanishing Point menu and choose Clip Operations To Surface Edges. Turning this option off lets you paint in perspective beyond the boundaries of the active plane.