Seems like they all bleached their hair
original post: here
1. Wow it's my first time seeing Karina with bleached hair
2. That's right, the all bleached their hair and were all blonde at one point ㅋㅋㅋㅋㅋㅋㅋㅋㅋ
3. Wow they give off a new vibe with bleached hair
4. Wow pretty
5. Wow Karina with bleached hair
6. I wanna see a picture of the full group with bleached hair
7. ? Wow they look way prettier than I thought???? Let's go with a full group with bleached hair
8. Usually, they try all sorts of things in order to find an idol's style before debuting themㅋㅋㅋ
9. Hul did someone say that this was during their trainee period? I think it's obvious that this was taken before their debut
10. That was the Black Mamba teaser that they scrapped
>> Winter also shared a picture of the scrapped Black Mamba concept and they also shared a picture of Giselle's test photo in blonde
>>> But nobody knows about this and there's no official news. It's a picture they posted last year during Ningning's birthday, and we've never seen them with that hair ever since they debuted so we only know that it was taken before their debut. Nobody knows if this was from a scrapped Black Mamba teaser or not
this is the first time seeing 
