diff --git a/manifest.json b/manifest.json
index 259f2f0..77c033a 100644
--- a/manifest.json
+++ b/manifest.json
@@ -57,6 +57,14 @@
             "js": [
                 "src/content/tags.js"
             ]
+        },
+        {
+            "matches": [
+                "*://*.furbooru.org/images/*"
+            ],
+            "js": [
+                "src/content/tags-editor.js"
+            ]
         }
     ],
     "action": {
diff --git a/src/content/tags-editor.js b/src/content/tags-editor.js
new file mode 100644
index 0000000..91207dd
--- /dev/null
+++ b/src/content/tags-editor.js
@@ -0,0 +1,3 @@
+import {TagsForm} from "$lib/components/TagsForm.js";
+
+TagsForm.watchForEditors();
diff --git a/src/lib/components/TagsForm.js b/src/lib/components/TagsForm.js
new file mode 100644
index 0000000..f6abf84
--- /dev/null
+++ b/src/lib/components/TagsForm.js
@@ -0,0 +1,81 @@
+import {BaseComponent} from "$lib/components/base/BaseComponent.js";
+import {getComponent} from "$lib/components/base/ComponentUtils.js";
+
+export class TagsForm extends BaseComponent {
+  /**
+   * Collect all the tag categories available on the page and color the tags in the editor according to them.
+   */
+  refreshTagColors() {
+    const tagCategories = this.#gatherTagCategories();
+    const editableTags = this.container.querySelectorAll('.tag');
+
+    for (let tagElement of editableTags) {
+      // Tag name is stored in the "remove" link and not in the tag itself.
+      const removeLink = tagElement.querySelector('a');
+
+      if (!removeLink) {
+        continue;
+      }
+
+      const tagName = removeLink.dataset.tagName;
+
+      if (!tagCategories.has(tagName)) {
+        continue;
+      }
+
+      const categoryName = tagCategories.get(tagName);
+
+      tagElement.dataset.tagCategory = categoryName;
+      tagElement.setAttribute('data-tag-category', categoryName);
+    }
+  }
+
+  /**
+   * Collect list of categories from the tags on the page.
+   * @return {Map<string, string>}
+   */
+  #gatherTagCategories() {
+    /** @type {Map<string, string>} */
+    const tagCategories = new Map();
+
+    for (let tagElement of document.querySelectorAll('.tag[data-tag-name][data-tag-category]')) {
+      tagCategories.set(tagElement.dataset.tagName, tagElement.dataset.tagCategory);
+    }
+
+    return tagCategories;
+  }
+
+  static watchForEditors() {
+    document.body.addEventListener('click', event => {
+      const targetElement = event.target;
+
+      if (!(targetElement instanceof HTMLElement)) {
+        return;
+      }
+
+      const tagEditorWrapper = targetElement.closest('#image_tags_and_source');
+
+      if (!tagEditorWrapper) {
+        return;
+      }
+
+      const refreshTrigger = targetElement.closest('.js-taginput-show, #edit-tags')
+
+      if (!refreshTrigger) {
+        return;
+      }
+
+      const tagFormElement = tagEditorWrapper.querySelector('#tags-form');
+
+      /** @type {TagsForm|null} */
+      let tagEditor = getComponent(tagFormElement);
+
+      if (!tagEditor || (!tagEditor instanceof TagsForm)) {
+        tagEditor = new TagsForm(tagFormElement);
+        tagEditor.initialize();
+      }
+
+      tagEditor.refreshTagColors();
+    });
+  }
+}