Remove transparency from synaptogram.
Remove transparency from synaptogram.

openconnectome/open-connectome,openconnectome/open-connectome,openconnectome/open-connectome,openconnectome/open-connectome,neurodata/ndstore,neurodata/ndstore,openconnectome/open-connectome,neurodata/ndstore,openconnectome/open-connectome,neurodata/ndstore