The values you select for the background has an influence on those you use for painting the sphere. The sphere art worksheet is set up against a light background, but you should also practice painting a sphere with backgrounds and foregrounds in a range of values or tones.
Possible variations include:
- Dark background, light foreground
- Light background, dark foreground
- Light background, slightly darker foreground
- Light foreground, slightly darker background
- Mid-tone background and foreground
