RGB (Red, Green, and Blue) values. Because a large percentage of the visible spectrum can be represented by mixing red, green, and blue, specifying RGB values is an easy way of identifying the specific shade of the specific color that you want PowerPoint to use.You can create a new color scheme by altering an existing color scheme. You can then add the new scheme to the list of available schemes, making it available in the Slide Design task pane and on the Standard tab of the Edit Color Scheme dialog box.
In this exercise, you will change colors in a color scheme and add a new color scheme to the presentation’s set of color schemes.USE the CreateScheme presentation in the practice file folder for this topic. This practice file is located in the My Documents\Microsoft Press\PowerPoint 2003 SBS\ChangingColor\CreatingScheme folder and can also be accessed by clicking Start/All Programs/Microsoft Press/PowerPoint 2003 Step by Step.
OPEN the CreateScheme presentation.
On the Formatting toolbar, click the Slide Design button to open the Slide Design task pane.
In the Slide Design task pane, click Color Schemes.The available color schemes appear in the task pane.
At the bottom of the Slide Design task pane, click Edit Color Schemes.The Edit Color Scheme dialog box appears, showing the Custom tab. The “Scheme colors” area of this tab displays eight colored boxes that make up the presentation’s current color scheme.

In the Scheme colors area, click the Text and lines color box to select the color.
Click Change Color.The Text and Line Color dialog box appears, showing the Standard tab, which displays a color palette of standard colors from which to choose.
In the six-sided color palette, click the dark orange toward the middle of the lower outer edge.

Click OK.The “Text and lines” color box changes to dark orange in the “Scheme colors” list.
Double-click the Shadows color box, and then click the Custom tab.This tab of the Shadow Color dialog box shows the current color as a combination of red, green, and blue.
Using the up and down arrows, or by typing the numbers, set the Red value to 153, the Green value to 0, and the Blue value to 51.The new setting produces a dark pinkish-red.

Click OK.
Change the Title text color to RGB values of 0, 128, and 0.
Change the remaining colors, picking shades of orange or red for Accent and Accent and hyperlink, and shades of green for Fills and Accent and followed hyperlink.
When you have finished, click Add As Standard Scheme to create a new color scheme.The Add As Standard Scheme button becomes unavailable, indicating that the color scheme has been added to the color scheme list.
Click the Standard tab.The new color scheme appears in the “Color schemes” box in the Edit Color Scheme dialog box, surrounded by a selection box.

Click Apply.A new color scheme appears in the Slide Design task pane. PowerPoint applies the change to all the slides.
In the Slide Design task pane, click the Close button.The task pane closes.
On the Standard toolbar, click the Save button.
CLOSE the CreateScheme presentation.