Donald C Marco Island , FL March 12, 2016 I had a cracked glass top to my cooktop I bought a new glass top and double sided adhesive tape. Unfortunately the tape is white and the cooktop and the granite countertop are both black so the tape is quite visible. I plan to attack the tape with a black magic marker to make it disappear. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes