Very nice, micranthum is one of my favorite species.
I have several micranthum labeled 'eburnum', I found if the growing area was relatively warm, the pouches come out white, if they bloom in winter or early spring, when their corner of the light garden is cool, they come out with a lot of pink. My 'normal' type micranthum have a good deal of pink no matter what time of year they bloom. If you want a snow white pouch try to keep it above 65 F at night, while it is in bud. Then go back to your normal temperature range.