Seven Goblins

The seven goblins lived by eating the colours from rainbows
For that reason, they were known as the Rainbow Goblins
They were always looking for rainbows to suck the colours from them and so to fill their bellies
One day, the Rainbow Goblins heard about the Valley of the Rainbow
It gave them an infinite appetite, just thinking about the great banquet they could enjoy there
Immediately, they gathered their tools and set off in search of the legendary valley
It didn't matter to them, to roam about the steep hills or to climb up the high mountains
Whenever difficulties arose concerning their journey, they just thought of the delicious colours ahead