How to get rid of the green color on my front camera of iphone 8 plus

Hi sandhya36, 

Thank you for using the Apple Support Communities. 

It looks the camera on your iPhone isn't working as expected and we're happy to help!

If the camera or flash on your iPhone, iPad, or iPod touch isn't working, try these suggestions: 

1. "Remove any case, accessory, or film that might block the camera or that places a magnet near the camera.
2. Test the camera by trying to take a photo.
3. If the photo is blurry, clean the front and back camera lenses with a microfiber cloth. If you see dirt or debris inside the lens or if the camera lens appears to be misaligned or blocked, contact Apple Support for help with your iPhone, iPad, or iPod touch.
4. Restart your iPhone, iPad, or iPod touch. 
5. Test the camera again by taking a photo. If your device has a front and rear camera, check if one or both isn’t working. To switch cameras, tap the rotate button ."

We hope this helps.

Take care.