EnterFrame Event in Corona

gistfile1.lua

--Disco App =)

--Create a rectangular object that covers the entire screen
disco = display.newRect(0,0, display.contentWidth, display.contentHeight)
--Play Disco music
media.playSound("whatislove.wav")

local function changeColor()
  --Changes the color of "disco" rectangular object randomly in every frame
  disco:setFillColor(math.random(0,255),math.random(0,255), math.random(0,255))
end

--EnterFrame listener calls "changeColor" function every frame
Runtime:addEventListener("enterFrame", changeColor)