2006 they changed their original red and white logo to grey and white to mark their rebranding with the Wii and DS. Now they seem to be ditching the Wii/DS brand back to white and red which could also mean back to more powerful systems and parity with the other two systems.
Wii branding was about going for lower end parts and more casual experiences to bring in a largely ignored market. That worked in the Wii and DS era, but not so much now with phones getting better.
Also everything being under one Nintendo brand instead of hardware brands will be good for them too because everyone knows what Nintendo is, but not all of their hardware names.
They are changing the logo without changing the actual logo. The actual Nintendo logo is still grey, but everything around it is turning red, which makes us associate that colour with Nintendo instead of grey.
I think thia is starting to hit me on a higher level.
Nintendos gray logo made it fade into the background (with Wi U) and now they are returning to their red logo, which is bold and stands out more. People remember the bright red color over the dull gray one.
Somethings changed about Nintendo with it, and I like it.
Charmander: for those who are stubborn enough to take lump after lump after lump in the hopes of eventually getting something awesome
Squirtle: for those who want something beefy with few downsides, yet also have a strange preoccupation with eye wear these days
Bulbasaur: for those who wanted an easy path to victory beset by a technical issue that makes their long-term viability questionable