One of my colors is missing.  I was setting up my pallette and bumped it and things went flying.  I found the missing pan for the viridian, but my burnt sienna paint is still hiding.  I suspect it will turn up when I spill something and the color liquifies on my carpet!  Tip:  use a glue dot to secure the pan in place and generously wet the paint on initial set-up so the block is not loose in the pan.  This is my first "good" watercolor paint set, so I am seriously bummed about the MIA color.