He wants to be a singer because he wants to be on stage in front of many people He wants to show them his singing and dancing skills. But damn this one is really hard. The only non-brown eyes I can think of is from Go Ara not an idol though but a Korean actress.
If Seongwoo can sport blue eyes with an innocent look Jaehwan can cop the sultry look with his bright blue eyes.
Sunghoon had severe Amblyopia lazy eye when he was young Milk Magazine Korea. Who would have thought that these two idols were. His cute glasses look good with the purple hair. After making this video I tried playing it myself.