What style and colour for this? Pic included.

[CushionAdvice]

New sofa. Well, newish. It's second hand. But sadly didn't come with any cushions for the back. So I need to get some large cushions for it but with such a bold pattern I have no idea what colour or style, type, etc. to get. Any ideas?

Plain mustard.

Or go completely clashing and get multicoloured polkadots etc.

A mix: some plain mustard and sown black

Charcoal velvet. It’s enough of a statement.