Opening a Toothpaste

I was browsing through Bad Designs and came across on the article of "How do you open a toothpaste". I agree with author, that it isn't very obvious on how to open the toothpaste seal (using the piercing tool). However, the design suggestions made by him wasn't really feasible.

1. Using a cap that un-seals while screwing it open: If it was possible, it would have been done. But if the tube was squeezed tightly while the cap is still unsealed, I believe its contents will seep out through the small capillaries of the screw mechanism.

2. Directions on how to open: It kinda wastes printed space on the tube itself. Companies (usually) won't do this as I think they have lots of info to put on the tube. And, they would probably have a mindset that consumers KNOW how to use the piercing mechanism. A BIG probably.

Rather, I think a good solution would be color-coding the Piercing Mechanism and the surface of the seal area. The color would have to be outstanding and caught noticed by consumers. The matching colors on both the piercing mechanism & sealed surface would allow consumers to understand that these 2 parts MATCH each other. And, Something sharp + Flat surface = Pierced Surface. The last step, once noticed by the consumer, is intuitively known to him (and all).