Hi,

The exam day guidelines are mentioned on the admit card. So you should read it carefully after downloading the admit card.

You are required to take only following document for jee advance exam -

1. a printed copy of the downloaded admit card
2. original and valid photo identity card (any one of Aadhaar, School ID, Driving License, Voter ID, Passport, PAN Card)

The colour of the pen is not mentioned so you can take blue or black simple ball point pen.

However It would be preferable if you take the black pen.

You can read the following article to know more about the do and don't at the jee advance exam. The link for which is - https://engineering.careers360.com/articles/jee-advanced-exam-day-guidelines

Hope it helps