New feature:

- Rainbow for all color types(namecolor,tabcolor,signcolor,chatcolor)
Permission to add it to a color inventory:
<Color>.rainbow

The config will expand:

If a player selects rainbow it will change the choosen color to rainbow but with only the colors being in the list. So if you remove every color except &0 and &1 it will make it rainbow mixed with &0 and &1.

if random is set to false:


if random is set to true:


when random is false it will always choose the same color
sequence everytime. if its true it will choose completly random colors every time from the colors list.