The buttons on my multi-function wheel don't look like those I see in other peoples pics.. I have all the same buttons in the same locations but the buttons themselves look different. The buttons in the following pic look like they could be levered out with a sharp object (please don't try this) but on mine there is no gap around the button. Hope that made sense?
(credit to blue_182 for this picture)

How is it that I have seen different colour backgrounds on the RNS 510 but can't seem to find any options to change it..?
Mine is red and black, but this looks loads better..