This Rainbow is knitted by using a total of 6 colours and using a simple garter or knit stitch. You don’t need very yarn for each colour as you decrease the length of yarn uses becomes less. You can use the colours in the picture which is Red, Orange, Yellow, Green, Light blue and dark blue. But the choice is yours. Its a great way of using up spare yarn.
I haven’t knitted a gauge for this pattern but it doesn’t matter if it ends up a little larger or smaller. It can be displayed inside or out. It will bring a little ray of brightness to these times.