Here's the link for the themes:
http://themebeta.com/chrome/theme/1028581 (Seulgi)
http://themebeta.com/chrome/theme/1028580 (Irene)
http://themebeta.com/chrome/theme/1028582 (Wendy)
http://themebeta.com/chrome/theme/1028583 (Joy)




TUTORIAL:
1. Click Apply theme button to download a theme file.
2. At the top right, click. and then More Tools -> Extensions.
3. At the top right, enable Developer mode.
4. Drag and drop the downloaded theme into Extensions page.
5. Click Add theme button.
1. Click Apply theme button to download a theme file.
2. At the top right, click. and then More Tools -> Extensions.
3. At the top right, enable Developer mode.
4. Drag and drop the downloaded theme into Extensions page.
5. Click Add theme button.