Find Color for CSS layout in Dreamweaver - Hex Value with Color Picker

If you need the color from an image, just 

• enter the color attribute in your CSS, e.g.

background-color: <type Ctrl + Enter> ;

• Choose the color-selection option, 
• choose Color picker and 
• place it above the image.
• Press Enter.

The value will appear in your CSS, e.g.: 

background-color: #25787F ;


Voilà!