First it was colors, then metals, then gems, and finally back to colors. What the heck!? Once they move on to other sources for name titles, they can't go back to using previous source for their previous gen games. This would've made more sense if they were used for the 2nd gen name titles before they starting using metals and gems. Now I'm worried what other traditions that are going to be ruined in the 5th gen. Pokemon game title tradition is Ruined FOREVER!
Wow. Overly-dramatic much?
It's been officially stated that the 5th Gen "will make us wonder 'is this really Pokemon!?'" Meaning, a revamp is on the horizon.
I think going back to colors (don't give me that "it's shades!" nonsense. I mean, they are shades, but they're more commonly known as colors. Not that it really matters, but still) is a perfect choice for them. They're going back to where they started with the 5th Gen names--simple, yet effective.
Just because the 5th Gens are named after colors like the 1st Gen doesn't mean some tradition is ruined (especially since there wasn't any tradition with the game names--they've sort of named them whatever they want) and it certainly doesn't indicate that they're intending to break every tradition of the main series as possible.
And, to be completely honest, it could be argued that they've never strayed from colors. Gold and Silver are colors. Crystal could arguably be a color, or a type of color (this is the only one that isn't an obvious color, however). Ruby, Sapphire, Emerald--all shades of Red, Blue and Green, respectively. Diamond (silvery) and Pearl (pinkish) are colors. Platinum is a color.
It's not like they went "Colors-Flowers-Rocks-Colors" or something.
Aren't Light and Electric basically the same thing?
Arguably, yes. Fire could also be considered light. A lot of people seem to think that Psychic is light, probably because of Espeon and Umbreon or something.
Though the Psychic is light argument doesn't make much sense.
Dark is not only super-effective against Psychic, but it is also immune to Psychic attacks.
If Dark is "evil" and Psychic is "light", what kind of message would that show if evil triumphed over light in every situation? : /
If anything, Fighting is more of a "light" type--especially since the "Dark" type is meant to reference fighting unfairly--tricksters, cheating, etc., and Fighting is fighting fairly, like convention fighting sports.