I am appearing for the CBSE conducted board exam (AISSE -2013) and in the four papers i have written till now, I have used black pen to highlight important points in English, Sanskrit and Maths paper and to write important points in FIT paper. As the back of admit card mentions to use blue or blue-black pen only i fear that my marks might be cut or something more grave( such as cancellation). Will this happen? Also it said to use only one pen for writing but as clearly understood i have used two colours of pen to write the paper. Will this cause trouble?