Troubleshooting Interface Loading with OptiFine

Checking the OptiFine Requirement

Default Dark Mode requires OptiFine to render its interface textures correctly. If the pack is active in your resource pack menu but your inventory or HUD remains standard vanilla gray, you need to verify your OptiFine configuration.

1. Open the pause menu and navigate to Options, then select Video Settings.

2. Look at the lower corners of the Video Settings screen to confirm that OptiFine is recognized and running in your game profile.

3. If OptiFine is not present, close the game and relaunch using a game profile that includes OptiFine.

Verifying Interface Settings

Once running under an OptiFine-supported profile, ensure custom interface elements are permitted to render:

1. In Options > Video Settings, click on Quality.

2. Check the setting for Custom GUI and ensure it is switched to ON.

3. Click Done to save your video settings.

4. Return to your world and open your inventory. The custom dark textures should now display properly across all containers and HUD elements.