So, I'm staring at a copy of the N64 version of Zelda: Ocarina of Time. 
 
It's a gold cartridge, which for a reasonable span of time in video gaming was kind of a big thing to do to your cartridge, rather than stick with the drab grays and blacks available. Indeed, for a while it seemed like getting a banana-color DKC was almost as valued as any of the current collector's edition trinkets packed in with our current games. Maybe we were just easier to please back then.
 
Still, the last of these as far as I can recall, were the Pokemon series; which conveniently color-coded right up to the switch from the GBA to DS, I suppose. Which brings me to a thought. Would colorized DS catridges mean much any longer or has that era just passed by unheralded?

I still have a gold Zelda i found in a skip with the NES, some dudes cleared it out of an old ladies attic, Zelda doesnt work unfortunately but the Mario game that was inside the NES and the NES both somewhat functional. on to the question, i dont think colour cartridges mean as much any more, it seems much less remarkable now, might be just me though but the novelty was much greater when games were rarer.