Custom Colors in TinyMCE

Is it possible to list a set of custom colors in Fred TinyMCE config as specified here? https://www.tiny.cloud/docs-4x/plugins/textcolor/#textcolor_map

This is what I’ve tried in RTE config so far:

"textcolor_map:": [
"0b4c8c",
"Blue",
"003300",
"Light Blue",
"9ed849",
"Green",
"ffffff",
"White",
"000000",
"Black"

]

I think you always have to put the complete configuration into the “RTE config” textfield.
This example (that only supports bold, italic and the colors) should work:

{
  "theme": "inlite",
  "inline": true,
  "selection_toolbar": "bold italic | forecolor backcolor",
  "plugins": "textcolor",
  "textcolor_map": [
    "0b4c8c",
    "Blue",
    "003300",
    "Light Blue",
    "9ed849",
    "Green",
    "ffffff",
    "White",
    "000000",
    "Black"
  ]
}

If you want all the default options, add the color specific parts to the default RTE configuration.