monitor = peripheral.wrap("top")
monitor.setBackgroundColor(colors.black)
monitor.clear()

monitor.setTextScale(1)
monitor.setTextColor(colors.white)
monitor.setCursorPos(3,1)
monitor.write("Harvard Spectral Classes")
monitor.setCursorPos(1,2)
monitor.write("---------------------------------------------")
monitor.setCursorPos(1,3)
monitor.write("Class   Temperature    Mass")

monitor.setTextColor(colors.black)

monitor.setBackgroundColor(colors.cyan)
monitor.setCursorPos(2,4)
monitor.write(" O      >30.000 K       >16")
monitor.setBackgroundColor(colors.lightBlue)
monitor.setCursorPos(2,5)
monitor.write(" B   10.000-30.000K    2-16")
monitor.setBackgroundColor(colors.white)
monitor.setCursorPos(2,6)
monitor.write(" A   7.500-10.000K  1.4-2.1")
monitor.setCursorPos(2,7)
monitor.write(" F   6.000-7.500K     1-1.4")
monitor.setBackgroundColor(colors.yellow)
monitor.setCursorPos(2,8)
monitor.write(" G   5.200-6.000K     0.8-1")
monitor.setBackgroundColor(colors.orange)
monitor.setCursorPos(2,9)
monitor.write(" K   3.700-5.200K   0.4-0.8")
monitor.setBackgroundColor(colors.red)
monitor.setCursorPos(2,10)
monitor.write(" M   2.400-3.700K  0.08-0.4")
monitor.setBackgroundColor(colors.brown)
monitor.setCursorPos(2,11)
monitor.write(" L   1.300-2.400K     <0.08")
