Just an observation since I watched all the episodes of this show in one go
White is truely a symbol for both Aditya and Zoya since :
1. The first time they met they were wearing white
2. In the flight when they met 2nd time they were wearing white
3. At the airport when Zoya is leaving mumbai they are wearing white
4. When Zoya rescues Adi from accident 4th time ,they are wearing white
If this has been planned by the makers then, that's a really cool but if its a coincidence then thats some coincidence 😆