http://model4.wordpress.com/2013/04/20/sega-spectrum/ "google Sega Spectrum".
There seems to be a bit of concern regarding the legtimacy of the mysterious "Sega Spectrum" might be fake.
I shall point out, this is simply NOT the case.
There seems to be an assumption that the "Sega Spectrum" Japanese TM logo is somehow fake.
I would like to point out that that's simply not the case.
The "SEGA" logo itself completely varies. It has ALWAYS different in varation.
For those of you wondering why the logo is darker than the well known Japanese logo the logic is pretty simple.
Depending on the product or lot run, depends on the type of commerce Sega is using. Here, I'll show you.
http://www.segagagadomain.com/hardware-mega/megacd1.htm
This is the Japanese Mega CD top loader model. Its using the "Cobalt" SEGA logo.
This is the model 2 run, again, the SEGA logo is cobalt colored.
http://www.eidolons-inn.net/segabase/HW-MegaCD2(J).jpg
This is the Japanese Shining Force III logo, the blue is slightly more vivid in tone.
http://admintell.napco.com/ee/images/uploads/gamertell/shining_force_iii_sega_saturn_box.jpg
The Japanese Sonic 2 box, uses the vivid blue colors of "Sega".
Here's Border Break the Japanese RingEdge 1 arcade game from 2009:
http://gigazine.jp/img/2009/02/20/border_break/20090220232433.jpg
And what do you know? It uses the same SEGA logo found on Spectrum.
And here's a TGS flyer for "Yakuza 5",
http://joyojc.com/wp/wp-content/uploads/2012/10/2012_09_25_16_46_47.jpg
It's completely light blue.
Deep Fear a Japanese, Saturn game.
http://www.shinforce.com/saturn/reviews/DeepFear/Deep_Fear-ssj-cva.jpg
completely dark blue.
And finally, the 1985 Japanese Master System variant, SEGA Mark III.
http://www.gamechoiceclub.com/image/md_mark3.gif
Logo is totally light blue.