mon=peripherial.wrap("side")
mon.setBackgroundColor(colors.black)
mon.clear()
mon.setBackgroundColor(colors.lime)--or other color
mon.setCursorPos(1,1)
mon.print("This is a button")

while true do
event,side,x,y=os.pullEvent("monitor_touch")
if x>0 and x<17 and y==1 then
--do button stuff
end
end