Update an application theme

curl --request PATCH \
  --url https://api.fluid.app/api/application_themes/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "application_theme": {
    "name": "Scranton Storefront",
    "description": "Fall paper sale storefront for the Scranton branch.",
    "variables": "{\"primary_color\":\"#1B4F9C\",\"accent_color\":\"#F2C230\",\"font_family\":\"Courier Prime\"}"
  },
  "publish": "true"
}
'

import requests

url = "https://api.fluid.app/api/application_themes/{id}"

payload = {
    "application_theme": {
        "name": "Scranton Storefront",
        "description": "Fall paper sale storefront for the Scranton branch.",
        "variables": "{\"primary_color\":\"#1B4F9C\",\"accent_color\":\"#F2C230\",\"font_family\":\"Courier Prime\"}"
    },
    "publish": "true"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    application_theme: {
      name: 'Scranton Storefront',
      description: 'Fall paper sale storefront for the Scranton branch.',
      variables: '{"primary_color":"#1B4F9C","accent_color":"#F2C230","font_family":"Courier Prime"}'
    },
    publish: 'true'
  })
};

fetch('https://api.fluid.app/api/application_themes/{id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.fluid.app/api/application_themes/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'application_theme' => [
        'name' => 'Scranton Storefront',
        'description' => 'Fall paper sale storefront for the Scranton branch.',
        'variables' => '{"primary_color":"#1B4F9C","accent_color":"#F2C230","font_family":"Courier Prime"}'
    ],
    'publish' => 'true'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.fluid.app/api/application_themes/{id}"

	payload := strings.NewReader("{\n  \"application_theme\": {\n    \"name\": \"Scranton Storefront\",\n    \"description\": \"Fall paper sale storefront for the Scranton branch.\",\n    \"variables\": \"{\\\"primary_color\\\":\\\"#1B4F9C\\\",\\\"accent_color\\\":\\\"#F2C230\\\",\\\"font_family\\\":\\\"Courier Prime\\\"}\"\n  },\n  \"publish\": \"true\"\n}")

	req, _ := http.NewRequest("PATCH", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.patch("https://api.fluid.app/api/application_themes/{id}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"application_theme\": {\n    \"name\": \"Scranton Storefront\",\n    \"description\": \"Fall paper sale storefront for the Scranton branch.\",\n    \"variables\": \"{\\\"primary_color\\\":\\\"#1B4F9C\\\",\\\"accent_color\\\":\\\"#F2C230\\\",\\\"font_family\\\":\\\"Courier Prime\\\"}\"\n  },\n  \"publish\": \"true\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.fluid.app/api/application_themes/{id}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"application_theme\": {\n    \"name\": \"Scranton Storefront\",\n    \"description\": \"Fall paper sale storefront for the Scranton branch.\",\n    \"variables\": \"{\\\"primary_color\\\":\\\"#1B4F9C\\\",\\\"accent_color\\\":\\\"#F2C230\\\",\\\"font_family\\\":\\\"Courier Prime\\\"}\"\n  },\n  \"publish\": \"true\"\n}"

response = http.request(request)
puts response.read_body

{
  "application_theme": {
    "id": 48213,
    "name": "Scranton Storefront",
    "description": null,
    "status": "active",
    "source": "fluid",
    "variables": "{\"primary_color\":\"#1B4F9C\",\"accent_color\":\"#F2C230\",\"font_family\":\"Courier Prime\"}",
    "created_at": "2026-09-02T14:12:08Z",
    "updated_at": "2026-09-18T16:40:55Z",
    "version": "1.0",
    "custom_stylesheet": null,
    "global_stylesheet": null,
    "theme_stylesheet_tag_injected": true,
    "theme_stylesheet_columns_hidden": true,
    "company_id": 1405,
    "cover_image": "https://cdn.fluid.app/themes/48213/scranton-storefront-cover.jpg",
    "outdated": false,
    "versions": [
      {
        "version": 12,
        "created_at": "2026-09-18T16:40:55Z",
        "published": true,
        "current": true,
        "author_id": 90417,
        "author_name": "Michael Scott"
      },
      {
        "version": 11,
        "created_at": "2026-09-15T09:03:21Z",
        "published": false,
        "current": false,
        "author_id": 90422,
        "author_name": "Pam Beesly"
      }
    ],
    "application_theme_templates": [
      {
        "id": 771204,
        "name": "Home page",
        "status": "active",
        "themeable_type": "home_page",
        "company_id": 1405,
        "default": true,
        "global": false,
        "application_theme_id": 48213,
        "source": "theme",
        "content": "{% section 'hero-banner' %}\n{% section 'featured-products' %}",
        "created_at": "2026-09-02T14:12:09Z",
        "updated_at": "2026-09-17T11:26:44Z"
      }
    ],
    "images": [
      {
        "id": 30581,
        "url": "https://cdn.fluid.app/themes/48213/scranton-storefront-cover.jpg",
        "position": 0
      }
    ],
    "git_sync_repos": [
      {
        "id": 5127,
        "role": "primary",
        "status": "connected",
        "repo_full_name": "fluid-gitsync/theme-48213",
        "default_branch": "main",
        "last_push_at": "2026-09-18T16:41:02Z",
        "last_pull_at": null,
        "status_updated_at": "2026-09-02T14:12:31Z",
        "last_error": null
      }
    ]
  },
  "meta": {
    "request_id": "3f9c2a7e-6b1d-4e8a-9c52-7d0e4b1a2f63",
    "timestamp": "2026-09-18T16:40:56Z"
  }
}

{
  "message": "<string>",
  "error": "<string>",
  "error_message": "<string>",
  "errors": "<string>",
  "meta": {
    "request_id": "<string>",
    "timestamp": "2023-11-07T05:31:56Z"
  }
}

{
  "error_message": "<string>",
  "errors": "<string>",
  "meta": {
    "request_id": "<string>",
    "timestamp": "2023-11-07T05:31:56Z"
  }
}