The Fruit Shake theme could do with more contrast between the footer at the bottom of the comments and it's background. You can see it on my site here:
I haven't checked, but I'm guessing this may only effect the blue design:
<img src="http://iciclesnz.files.wordpress.com/2011/07/fruitshake.png" />
The blog I need help with is iceblock.org.nz.