For me too the site took little extra time to load. Suggest you to work on the images types and image sizes used on the blog. Heavy images may take little longer to load than lighter images.
The color combination is good, try using verdana font type with around 12px font size on this color combination. This is just a suggestion.
I can see a empty light blue band above the blue header in FireFox, don't know for what reason it is there.
Another one good suggestion is, try setting 120 banner adsense ads at somewhere else, but offcourse that's your individual choice.
Rest, best of luck with your blog and keep updating it regularly with good contents
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