Dear kiran,

There is no such rule like the applicant should carry specific type of admit card, it is your choice to take your admit card in black and white or in colour , when you take print in colour the details in the admit card will visible clearly. So it is preferable to take in colour one.

Please make sure that all the documents need for the examination is kept ready a day before examination.

Also please use the career 360 link to know about the details and guidelines you have to follow for neet examination

https://medicine.careers360.com/articles/neet-exam-day-guideline

Hope these will help you and all the best for your examination and perform well .

Both are eligible but I would recommend coloured because of the photograph. It will help the authorities for proper verification in exam centres and keeps less amount of doubt.