Hello dukesouvik,
I am sorry to hear about the issues you are having with your new Deskjet 2515. As I understand, the current problem you are experiencing is that you cannot print in colors. I have researched this issue for you and I have found a troubleshooting guide for you to follow.
Please click the link and complete the troubleshooting:
Troubleshooting Print Quality Issues
I hope this helps you!
Regards,