Mac OS X can help save a few pennies on your electricity bills thanks to its built-in Energy Saver features, but sometimes it causes unexpected side effects. One that's especially annoying is seeing washed out colors after waking up your display.
Getting your display back to normal if your colors are washed out or look faded after waking up only takes a couple of steps, and it doesn't require restarting your Mac.
- Start by choosing Apple menu > System Preferences.
- Select the Displays PreferencePane.
- Click the Color tab.

The Color tab kills washed out display colors
Your display's colors should return to normal as soon as you click Color.
This is an issue I've seen most commonly on Mac laptops that also use an external display. Regardless of which type of Mac you use, the washed out display issue is really annoying, but at least the fix is quick and easy.

Jeff Gamet
11” MacBook Air 1.6GHz dual-core Intel Core i5: $829.00 Delivered
Samsung S22B300B 21.5” LED Backlit LCD Monitor: $129.99 Delivered
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Also very common on desktop, non-iMac machines that use 3rd party monitors. This solution works well on both Leopard and Snow Leopard in my experience.