Now the 6301 top-drilled bicone is available in 2009/10 new colour: Air Blue Opal. In fact, this Swarovski article comes in a lot of unusual colours that is normally not available for the other beads and pendants; as you can see in the sortable table below.
The 6301 Drop Bicones next to each other work amazinlgy well or when 6301 in combination with other shapes.