Rainbow beacon

Send your your colors up! Here’s a beacon with the colors of the rainbow.

Try the code:

let location: Position = null
let rainbow: number[] = []
player.onChat("beacon", function () {
    location = positions.add(
    player.position(),
    pos(1, 0, 0)
    )
    for (let i = 0; i < 10; i++) {
        for (let value of rainbow) {
            blocks.place(value, location)
            location = positions.add(
            location,
            pos(0, 1, 0)
            )
        }
    }
})
rainbow = [
    RED_CONCRETE, ORANGE_CONCRETE,
    YELLOW_CONCRETE, LIME_CONCRETE,
    GREEN_CONCRETE, LIGHT_BLUE_CONCRETE,
    BLUE_CONCRETE, MAGENTA_CONCRETE,
    PURPLE_CONCRETE, PINK_CONCRETE
]