Change product thumbnail depending on collection? Help please.

Store Design
1

Hi Friends of the internet,

I have searched far and wide for days, even weeks for an answer that works on my site - but i am yet to solve my problem… :disappointed_face: I have come close, but no code has worked on my theme.

I sell waterproof jewelry and i have a few collections - The main ones being “silver” and “gold”.

:backhand_index_pointing_right: I wantthe product thumbnails to show the “gold” option (first picture) when in the gold collection - and the “silver” option (2nd picture) when in the silver collection - you can see the problem at:

Silver collection:

https://khani.dk/collections/solv

Gold collection:

https://khani.dk/collections/guld

My theme is called “Colorblock version 3.0.0”.

I really hope you can help me - thank you for your time.