ZE:A members were the guests on MBC cable music channel show, " All the K-pop". While on the show, the group opened up a little about what they like to collect and member Siwan said that he was quite obsessed with collecting pink colored stuff. Netizens could be a bit confused knowing about Siwan's hobby. It appears that Siwan's preference for pink shows that every guy has a softer side. Pink or no pink, Siwan's charisma with fans will never change.

Siwan also showed his collection of various things and it was revealed to all be pink-colored. His co ZE:A members even joked about how his underwear could possibly also be pink. While generally associated with women, pink can also be men's color, especially depending on a man would flaunt the color. In the case of Siwan, he is comfortable having that kind of color that's why he had no issues using and collecting it.

In ZE:A, not only Siwan has a weird obsession but also member Dong Jun. Dong Jun opens up about collecting leopard prints and patterns, up to the point that something close enough to his obsession can still make it to his collection. But again his co-ZE:A members joked about not wearing the see-through leopard pattern that his fans gave to him.