As a white-label Shopify agency we get asked this question quite a few times and I think the only article available on this talks about white-label products for Shopify and not white label the Shopify platform.
Like most eCommerce stores you are paying to use the software, which depending on traffic, resources etc you will pay a big chunk of money each month for this service.
Now can you white label Shopify? no, Shopify doesn’t offer you the option to rebrand their interface with your brand logo & colours
There are options to modify your dashboard to suit the way you work but this is very limited.