To make changes to the Windows color scheme, follow these steps:
1. Right-click on an empty area of the Desktop and choose Properties. (In Windows 7, click Personalize.)
2.Select the Appearance tab, Window Color, or the appropriate option for your OS. In Windows 7, click Windows Color, and then enable the Advanced options. 
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2. If you see the Windows and Buttons and Color Scheme, note the choices. To see any theme or color, select it and click Apply.
3. In Windows XP, to make your own specific and personalized changes to the color scheme, click the Advanced button and continue through these steps.
4. The Advanced Appearance dialog box allows you to select a specific part of the Windows theme you’re using and make changes to it. Click the down arrow under Item to see what is available. Choose Active Title Bar. In this example, we’ll change how the title bars appear.
5. Use the up and down arrows to change the active title bar’s size and color(s) and the type, size, color, and other attributes of the font. Notice that you can preview the changes without clicking OK.
6. Once you’ve decided on any change, continue selecting items from the Item list and making additional changes as desired. Click OK when finished and OK again to close the Display Properties dialog box.
Tip: Making a change to the color scheme and/or fonts used is a good choice for those who are color-blind or have other visual impairments. It’s also for anyone who just wants to add a little spice to the old and tired Windows colors.
You can make additional changes to the display properties by working through all of the available options. For instance, from the Appearance tab and the Effects button, you can choose Large Icons, perfect for media centers since they’re usually farther away than other monitors are, and you can apply effects to menus (or remove them). Now that you’re aware of the options, take a few minutes to browse through them.