use HEXcode in JSON code

[AkaFrankjuhhh]

After my message in https://discord.com/channels/526933440214597677/547110990278426629/1419381180029079693

So i am trying to configure the "locale_override.properties" in the mcMMO plugin.
After the JSON lines there is:

98/99
"#DO NOT USE COLOR CODES IN THE JSON KEYS
#COLORS ARE DEFINED IN advanced.yml IF YOU WISH TO CHANGE THEM"

When we search in the advanced.yml we can't find the place to change the colorcode.
In some code in the locale_override.properties we can use # code but in some we can't.

So i was wondering if this can be changed.