Installation Guide:

Follow these steps to set up the Color Grid Generator addon:

1. Begin by downloading the Color Grid Generator addon as a zip file.

2. Open Blender and navigate to Edit > Preferences > Add-ons.

3. Click on the Install button located at the top right corner of the Preferences window.

4. Browse to the downloaded zip file and select it. Then, press the Install Add-on button.

5. Activate the addon by marking the checkbox beside its name in the Add-ons list.

6. Additionally, you might need to install the Pillow library. If you don't already have it installed (though it might be present due to its use in other popular add-ons), you can easily install it. In the Preferences, locate the install pillow button and click it. Note that if you have Blender installed in the C drive, you might need to launch Blender as an administrator for this step to succeed.

7. That's it! The Color Grid panel will now be accessible in the side panel of the Image Editor space.