diff --git a/README.md b/README.md
index 6fde5c93..d3de9313 100644
--- a/README.md
+++ b/README.md
@@ -138,19 +138,6 @@ html_theme_options = {
 }
 ```
 
-## IBM Projects: how to use blue color scheme for Ecosystem theme
-
-By default, the `qiskit-ecosystem` theme uses purple as an accent color. Most projects should continue to use this, but certain highly IBM-affiliated projects like Qiskit IBM Runtime can change the accent color to blue by setting up `conf.py` like this:
-
-```python
-# Only intended for specific IBM projects.
-html_theme_options = {
-    "light_css_variables": {
-        "color-brand-primary": "var(--qiskit-color-blue)",
-    }
-}
-```
-
 ## Tip: suggested site structure
 
 To keep UX/UI similar across different Qiskit packages, we encourage the following structure for you sidebar, which can be set in the toctree of your `index.rst`:
diff --git a/example_docs/docs/conf.py b/example_docs/docs/conf.py
index bf9be6e1..ec452b7a 100644
--- a/example_docs/docs/conf.py
+++ b/example_docs/docs/conf.py
@@ -42,7 +42,6 @@
     "sphinx.ext.autosummary",
     "sphinx.ext.mathjax",
     "sphinx.ext.viewcode",
-    "sphinx.ext.extlinks",
     "jupyter_sphinx",
     "sphinx_copybutton",
     "sphinx_design",
@@ -64,16 +63,6 @@
 _THEME = os.getenv("THEME", "qiskit")
 html_theme = _THEME
 
-if _THEME == "qiskit-ecosystem":
-    # This tests out that ecosystem projects can change the color scheme.
-    # Only specific IBM projects should set this! Most Ecosystem projects
-    # should use the default of purple.
-    html_theme_options = {
-        "light_css_variables": {
-            "color-brand-primary": "var(--qiskit-color-blue)",
-        }
-    }
-
 html_context = {
     # Users of the theme can set prior version numbers. They'll
     # show up in the sidebar under the "Previous Versions" section.
diff --git a/src/qiskit_sphinx_theme/assets/styles/_colors.scss b/src/qiskit_sphinx_theme/assets/styles/_colors.scss
index fa321d31..9832b101 100644
--- a/src/qiskit_sphinx_theme/assets/styles/_colors.scss
+++ b/src/qiskit_sphinx_theme/assets/styles/_colors.scss
@@ -1,11 +1,9 @@
 body {
-    // Define some Carbon color schemes from 
+    // Define the Carbon color schemes from 
     // https://github.com/carbon-design-system/carbon/blob/v10/packages/colors/src/colors.js
-    // that are consistent with Qiskit's branding.
     //
-    // While we set default colors, IBM-focused projects will want to use blue.
+    // Projects can override `--color-brand-primary` to whatever they want.
     --qiskit-color-purple: #6929C4;  // purple70
-    --qiskit-color-blue: #0043ce;  // blue70
 
     // Furo normally distinguishes between these two variables, but
     // we want them to be the same.
diff --git a/tests/js/ecosystem.test.js b/tests/js/ecosystem.test.js
index 34302be2..d6da30db 100644
--- a/tests/js/ecosystem.test.js
+++ b/tests/js/ecosystem.test.js
@@ -13,19 +13,8 @@
 
 import { expect, test } from "@playwright/test";
 
-import { click } from "./utils";
-
 test("left side bar renders correctly", async ({ page }) => {
   await page.goto("");
   const leftToC = page.locator(".sidebar-drawer");
   await expect(leftToC).toHaveScreenshot();
 });
-
-test.describe("colors can be changed", () => {
-  test("translations", async ({ page }) => {
-    await page.goto("");
-    await click(page, "div.qiskit-translations-container i");
-    const translations = page.locator("div.qiskit-translations-container");
-    await expect(translations).toHaveScreenshot();
-  });
-});
diff --git a/tests/js/ecosystem.test.js-snapshots/colors-can-be-changed-translations-1-linux.png b/tests/js/ecosystem.test.js-snapshots/colors-can-be-changed-translations-1-linux.png
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index e8b2ad33..00000000
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diff --git a/tests/js/ecosystem.test.js-snapshots/left-side-bar-renders-correctly-1-linux.png b/tests/js/ecosystem.test.js-snapshots/left-side-bar-renders-correctly-1-linux.png
index cb7143f8..49a6b331 100644
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