At present, the settings you see on the Snapppt Embeds page are the only options that can currently be configured. That means, at the very moment, the colours cannot be customised, the 'Buy' button text cannot be modified etc.
With regards to the Snapppt branding, to meet the needs for enterprise customers, the offering of a 'white label' bolt-on is under consideration. Contact us for more information.
Note that Snapppt is under heavy development at the moment, and growing rapidly. With this, many updates, new features and even new embed types are on the way. We ask that you bear with us for the moment, and watch this space.