Missing text color

Hello,

Since 1.14 I noticed that there are 2 colors missing in the chat:
Brown and Magenta. 

I know this is a thing on signs, but with tellraw I cant get brown colored text in the chat.

The command I used in the command block:
tellraw @p {"text":"Test","color":"brown"}

If I change "brown" to something like "red", it works fine.

But I really miss magenta and brown in the chat.