So I've been trying to track down a firm answer on this topic across the web and finally landed here, which seems to be a pretty legitimate developer forum.

My question is...is it possible to change/customize the stock Garmin interface colors? (specifically on Nuvi 200W, generally across all Garmin GPS devices).

Getting more specific:
- Background color, daytime / night time schemes
- Font and type color
- Digital speedo and readout template

Instinct tells me the graphical UI is locked down by a combination of hardware and software, though I'm curious as to if anyone here has tinkered with it? I can imagine it's not at the top of the priority list in terms of what the GPS device can / should do, though I simply can't stand the appearance of certain elements...like purple buttons.

Any insight is appreciated!