New for CS4 is Kuler - an online gallery of colour palettes. It lets you build your own favourite sets of colours and offers tools based on the science of colour theory to create harmonious colour combinations.
Even better, you can see thousands of palettes created by other designers, showcasing everything from cool and subtle schemes to loud and vibrant colour mixes.
To make it even easier for you to use this tool, WebAssist has a free Dreamweaver extension named PalettePickerl
Access PalettePicker from within Dreamweaver SC4 via Window...Palette Picker. Although this extension is free, you will receive an activation code with your free order which must be used when you first use PalettePicker.
To learn how to use Adobe CS4 extensions, see here.