I think you can't see clearly enough which country saw your blog, whereas the orange to red, even if nuances weren't clear, you could see that well.
I would prefer 4 different colors that can be light or dark, which associated to a high quarter, medium high quarter, medium low quarter, and low quarter.
Also, a Widescreen map would be perfect in order to see the most littles countries.
What do yo think ?
The blog I need help with is design4youandme.wordpress.com.