I've just finished a few experimental pieces where I have applied the colour in a different way. Instead of having flat colour on the inside of the piece in which to sandblast my designs into, I have added color to the outside using two colours together to create a bit of a sparkle.
It's been really nice to work in a slightly different way as it has allowed me to play around with some new shapes (some wobblier than others!) as the design is just applied to outside. You can't really see from the photo's, but as the colour has a slight texture to it and the areas that have been sandblasted away have a faceted quality to them. I'm looking forward to experimenting a bit more and seeing how it develops!