func redraw(board, nextBoard Board, l *controller.Launchpad) {
for x := 0; x < len(board); x++ {
for y := 0; y < len(board[x]); y++ {
if board[x][y] != nextBoard[x][y] {
if nextBoard[x][y] {
l.LightOnXY(x, y, ON_COLOR)
} else {
if monochrome == false {
l.LightOnXY(x, y, OFF_COLOR)
} else {
l.LightOffXY(x, y)
}
}
}
}
}
}
