Levels on map turned to golden candies

Wanwan-2

After the recent update yesterday, the level bubbles (usually green, blue, purples) on the map turned to golden candy. What does it mean..? 

Wanwan-2

Now I know... Haha.. If you finish the level on the first try it'd become a golden candy..

Wanwan-2

How do I post a screenshot here on mobile.. 

Wanwan-2

Now I know... Haha.. If you finish the level on the first try it'd become a golden candy..