Hi @Ju! :smileyhappy:
Apologies for not getting to this until now. If you've ordered from our online store you wouldn't be able to change an order once it's placed. If you do want to change the colour you've ordered, you'd need to either cancel the order or return the order and place a new one. With the Tab S3 being a pre-order, you should be able to cancel and place a new pre-order.
There's some Shopping FAQ's on our website here (which also has online store team's contact details) if you want to check them out. Hope you've been able to sort something today! :smileyhappy:
