Inventory#setTitle(String), BookMeta#setTitle(String[]), ItemMeta#setDisplayName(String) and ItemMeta#setLore(List<String>) don't respect the rgb hex colours created using net.md_5.bungee.api.ChatColor#of(String).

Steps to reproduce:

Have a plugin that creates a custom inventory with a custom title with in it some custom items with custom names and titles that use rgb chatcolours.

Verify in-game that the text does not display in the right colour. Digging through "/data get entity @p" it shows that in the cases mentioned a regular string text component is used with legacy text in it.

In my example I expected to find text coloured brown, but I got black instead.

Interestingly text in book pages did display in the correct brown colour.