 * rhythmlet.display:
    stand-alone display

 * rhythmlet-metal.display:
    stand-alone display with a brushed metal background

 * rhythmlet-psi.display:
    display that can be integrated with the Psi displays (w/ separator)

 * rhythmlet-psi-nosep.display:
    display that can be integrated with the Psi displays (w/o separator)
    can also be used as stand-alone with borders from Psi displays

 * rhythmlet-LT.display
    display that uses LT variations
