Set the name of a color, which will then change the style of the outermost table.
field 1 (custom color 1) (optional) - Affects the border and background colors of the outermost table.
field 2 (custom color 2) (optional) - Affects the color of the header ("Recurring wild Pokémon characters in the anime"), and dividers ("Recurring wild Pokémon that have been caught"). If left blank, field 2 will try copy whatever's in field 1.