What colour blackout blind is best for my blue bathroom?

-I have a blue mosaic tiled bathroom with a large horizontal window - what colour blind would best fit this colour scheme?That would depend on your overall colour scheme - do you want a contrast or a tone? Also do you need a blackout blind for a bathroom? You would usually have those in a bedroom and I would have thought that it would be an unnecessary expensive to have a blackout blind in a bathroom, surely a standard blind would do?
I think white would look good!