Step1. Download sample code in Google and install it to check ID. Its ID is 'abglihdcgbjkbhalmfachdimiapkfedl'.

Step2. Make .crx file. Code is in C:\make_page_red\.

Step3. C:\make_page_red.crx and C:\make_page_red.crx are created.

Step4. Create subdirectory under HKEY_CURRENT_USER\Software\Google.

Step5. Set version and path value in HKEY_CURRENT_USER\Software\Google\Extensions\abglihdcgbjkbhalmfachdimiapkfedl.

Step6. Turn off Google Chrome and restart it. But nothing is changed.

This is what I expect(Installed correctly and button is made.)