Is it possible to issue a single command to change, say, LEDs 20 through 40 to some RGB value? Or is it necessary to actually resend the data for all 60 LEDs? Alternatively, is it possible to upload an "image" and then selectively hop around to different columns? I'm trying (in Python) to minimize the amount of data transfer. On the other hand, its only 180 bytes of data to redefine the strip. Maybe I just shouldn't worry about it?