curl --request POST \
  --url https://api.camelai.com/api/v1/appearance/ \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "name": "<string>",
  "theme_mode": "light",
  "start_message": "<string>",
  "recommendations": "<any>",
  "response_mode": "full",
  "lm_primary_background_color": "<string>",
  "lm_light_background_color": "<string>",
  "lm_dark_background_color": "<string>",
  "lm_button_outline_color": "<string>",
  "dm_primary_background_color": "<string>",
  "dm_light_background_color": "<string>",
  "dm_dark_background_color": "<string>",
  "dm_button_outline_color": "<string>"
}'

{
  "id": 123,
  "name": "<string>",
  "theme_mode": "light",
  "start_message": "<string>",
  "recommendations": "<any>",
  "response_mode": "full",
  "custom_css_vars": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "last_modified": "2023-11-07T05:31:56Z",
  "is_default": "<string>"
}