Manually changing out each taskbar icon will take a lot of time. If you want to customize your Windows 7 taskbar icons, here is how you can switch to an entire new set of icons in only a couple clicks.
7Conifier is a new free app for Windows 7 that can customize all of your taskbar and start menu icons in only a couple clicks. Download the zip file( Download 7Conifier to Customize Your Windows 7 Icons ), then unzip the contents of the folder so you can get started customizing your taskbar.
After unzipping, run the 7CONIFIER.exe program. Since this is the first time you’re running the app, you’ll be asked if you want to backup your existing icons in a Default package. This is a good idea so you can quickly restore your icons if you don’t like the changes, so click Yes to continue.
After that simply select one of the available icon packs, and click Apply to change your icons to the new set.
By default, the icons will be applied to the taskbar and start menu, and Explorer will automatically be restarted to apply the changes. You can change these settings if you wish, or just click Apply to change your icons.
If you’re running some less common programs, you may notice that their icons do not get changed. To fix this, go back to 7Conifier, select the icon package you want, and click the pencil icon to edit the icons.
Select the Icons tab, and here you can change the icon settings for all the default programs included with the set. You can also add your own application settings, or automatically import all pinned applications so you can easily customize their icons. If you have another set of icons you wish to use, you can swap to it here as well. Once you’re finished, click Save, then apply the icon theme again to get your other icons customized.