So pretty! ^-^
A Rainbow block is a solid block, which is made of 7 different colors of cloth.
The Rainbow block changes colors in your inventory and when placed.
Then, put the cloth into a 3 x 3 crafting area in any order and in any slots to get 1 rainbow block.
- This block doesn't appear on the Creative inventory, forcing you to get it by making it on the Crafting Table.