Color and Font CHoosers indicate choice in style of their own Choose
button instead of in separate indicator.
icon for reset button
Role for Pen and Brush control groups.
Migrate adaption from Formation to Instrument (BlockInstrument)
Migrate adaption from CharFormation to CharInstrument
Clean cruft from instrument adaption.  Change QWidget model adaption to
enums.
Flesh out tool stylesheets.  Not register unused models.  Misc cleaning.