Windows XP Default Themes and Customizing Them

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Windows XP Pro offers you three default themes: Blue (Default), Olive Green, and Silver. The Windows XP Blue theme is especially good for people who spend long hours on computers. You can further customize them using the Display Properties box, clicking Advanced button under the Appearance tab (Fig 1).
Caring for your Computer While Downloading Free Windows XP Desktop Themes
A little search on the Internet can get you several more themes that suit your needs or preferences. There are many other sites that offer best Windows XP desktop themes. Most of them offer free Windows XP themes downloads. However, you should always take precautions while going for free Windows XP themes downloads. Many such "free Windows themes downloads" may also install malware in your computer.
I recommend sites that you might have tried previously and felt reliable. Some such sites are CNET, PCMAG, BrotherSoft, and of course, Windows Download Centre.
System Requirements
In an attempt to create extraordinary free Windows XP themes, programmers often tend to use codes that need higher resources. If you download a 3D theme for Windows, you better check the compatibility of the theme with Windows XP, and the amount of RAM it consumes. Installing a resource-consuming theme slows down your system and also consumes power rapidly while you are on batteries.