Hey, it won't let you do that, godknows why DW didn't implement this feature. So here's a basic way to do it:
- Download, install and open
ColorPic
- In the "Chips" panel, click an unused chip (one that doesn't have grab written in it)
- Move your mouse to the color on the image in DW8
- Press [Ctrl]+G
- Select the chip in colorpic again and press copy next to the hexidecimal value ("FFFFFF" or similar)
- In DW, right click and select page properties.
- In the appearance section paste the copied value in the text box next to "background color"
- Press Apply, and you're done.
I know it's a long winded method but that's the one i use regularly when getting custom colors from an image.
Cheers,
Jamey