A red background could easily become a minor problem, but often, little inconsistencies will be disregarded. To be sure, it is best to consult the specific regulations by the National Testing Agency (NTA).

Minor inconsistency in photographs will be mostly ignored but do crosscheck the latest guidelines from NTA and get clarity from their helpline.

Here are some things to consider:

Photo Requirements: Your photograph must meet the requirements of the NTA, which usually are specific dimensions, background color, and so on.

Verification of Documents: During the document verification process, the authorities may check your photograph. If it is not found to strictly follow the guidelines, they may ask you to procure another photograph which again follows the guidelines.

It's unlikely to result in any conflict in your candidature to sit in the JEE Main exam. In that case, precautionary measures are taken below:

Call up the NTA helpline: Try contacting the NTA helpline to understand the exact rules and what correction is needed.

Documentals: Get additional documents, such as a recent passport-sized photograph, ready for presentation at the time of need.

This way, you'll be able to minimize the potential problems and make the application process extremely smooth.

Stay calm and just follow the instructions provided by the NTA.