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Hour 4. Working with Bitmap Images > Choosing Colors and Managing Swatches

Choosing Colors and Managing Swatches

Another critical area of working with bitmap objects and the drawing tools is understanding how to work with the color mixer and swatches. The color mixer helps you choose individual colors to use with the drawing tools. Swatches are a way of saving a group of individual colors that you will be using repeatedly. Remember that a bitmap image is simply a grid of pixels with different color values, and a palette is the group of color swatches used in the particular image. Understanding the concepts behind the color palette is very important.

Fireworks uses a 24-bit RGB palette. RGB stands for red, green, and blue. A 24-bit image is actually composed of three 8-bit grayscale images—one for each color. The three channels are combined to represent the colors on screen. Your computer monitor is an RGB device; each point, or pixel, is composed of three phosphors—a red one, a green one, and a blue one (in the case of liquid crystal displays, each point is a group of charged crystals). This is the process of additive color. Generally, anyone browsing the Web will be viewing images (and their colors) in the additive color space.


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