Setting Color Bit Depth
The range of colors available through digital computer images is usually expressed in terms of bit depth. This expression refers to the number of bits of data carrying the color information. Common bit depth levels for images include 8-bit and 24-bit color. In general, more bits of data make more colors available. The Color bit depth option applies only to .gif and .png images. .jpg images always generate 32-bit images.
To set the color-bit depth for .gif and .png images
Open your Stationery design project.
On the View menu, click Style Designer.
On the Project menu, click a target in the Active Target menu option that is an output format that supports this option.
In Graphic Styles, select the graphic style you want to modify.
On the Options tab, select a value for the Color bit depth option.