17.4. Color Control
Colors can enhance a program’s appearance and help convey meaning. For example, a red traffic light indicates stop, yellow indicates caution and green indicates go. Structure Color defines methods and constants used to manipulate colors.
Every color can be created from a combination of alpha, red, green and blue components (called ARGB values). All four ARGB components are Bytes that represent integer values in the range 0 to 255. The alpha value determines the opacity of the color. For example, the alpha value 0 represents a transparent color, and the value 255 represents an opaque color. Alpha values between 0 and 255 result in a weighted blending effect of the color’s RGB value with that of any background color, causing ...
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