How to Remove the Apple Dock Reflection
The default appearance for the application dock in Mac OS-X includes a reflective 3D effect, which is one of the ways the Mac interface attempts to incorporate style. If you don't like the reflected appearance of the dock you can remove it, despite the fact that the Settings dialog box doesn't contain any options for doing so. Use a special Terminal command to remove dock reflection from your Mac OS-X computer.
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Instructions
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Click the "Finder" application on the left side of your application dock and then open the "Applications" folder in the left pane. Open the "Utilities" sub-folder and double-click "Terminal" to open the program.
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Type or copy and paste (recommended) the following Terminal command into the Terminal window (omit the quotes):
"defaults write com.apple.dock no-glass -boolean YES; killall Dock"
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Press "Enter" to run the command; the application dock will now close and re-open without reflection and 3D effects.
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Tips & Warnings
To re-enable reflection and 3D effects in the dock run a similar Terminal command:
"defaults write com.apple.dock no-glass -boolean NO; killall Dock"
Note: Changing YES to NO is the only difference between the two commands.
Information in this article applies to Mac OS-X 10.5 (Leopard), 10.6 (Snow Leopard), 10.7 (Lion) and 10.8 (Mountain Lion). It may vary slightly or significantly with other versions.
