HTC was working with US mobile operator Sprint to introduce a colour customisation tool for the HTC 8XT, according to The Verge's sources. The online personalisation service would enable consumers to add and change colours on the HTC Windows Phone, offering more options that help make the purchase that much more unique. HTC Design Studio, as it was known, was dropped due to cost and complexity.
As shown above, the HTC Design Studio would have provided means to alter colouring for speaker and accents, as well as two-tone highlights and personal engraving. Motorola is offering a similar service with the Moto X, but should the project be successful we could see HTC (and other OEM partners) launching their own tools. Imagine if Nokia followed suit, enabling you to customise your Lumia Windows Phone too. It's a shame HTC shelved the project.
Source: The Verge