I bought the purple glue sticks thinking the purple would be easy to see where the glue had been placed on the paper. It definitely did not appear colored. Also the two pieces of paper stock did not remain stuck together even after drying for a day.
This product looked like it was dried up when I first opened it. Had to use so much pressure to apply that it broke in the tube. A day later the paper I used the glue stick on fell off the base paper. I will stick to the name brands.