How can I get background color of a layer in Photoshop?

I have a design in .psd format. It is using various layers and diffrent settings for opacity. I am using Photoshop CS3. How can I get background color of the layer. One way is to use in-build Color Palette utility but that doesn't suits me. I want a way by which I can get exact Brush tha开发者_StackOverflow社区t is used for the background. It may or may not have Gradients.

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Not that this is programming related, but use the eye-dropper tool.

http://www.ehow.com/how_2193268_use-eye-dropper-tool-photoshop.html

Once the color is placed into your "foreground color" box, click the box and it will show you the color in RGB, Hex, and pretty much any other way you can display a color value.