The important feature on an invisible zip is the colour of the zip puller because this is what will usually be seen.
I've got invisible zip chain on a 6 meter roll in 4 colours and includes 12 pre-mounted zip sliders and puller.
I've also got single zips in 30 lovely bright and household colours across 4 sizes which are 8", 9", 16" and 22".
Get in touch if you would like larger quantities. I might be able to supply from stock but were never that far away from getting them on special order for you.