Here is another useful download - an empty swatch with only white, 50% pure black and 100% pure black in. It is good to have a starting point for custom swatches you may create and it is a waste of time keep on reverting to the default swatch full of colours and deleting them - so here you go, download, enjoy and use!
Download Photoshop Ninja empty colour swatch
TO INSTALL: Just decompress the zip file and drag the single file to Applications>Photoshop>Presets>Color Swatches. If you restart Photoshop you can then load them off the Brush palette menu with a single click!

fantastic. so many hours wasted deleting swatches. until adobe adds a “clear swatches” item this is the best fix yet.
thanks!
cool! it would be also greate if we had an empty set of styles as well
Well well well, keep your eyes peeled and you never know - it might appear in the downloads!