I like the simplicity in the Skylark theme, but I'm wondering if the blue slidebar can be changed to a different colour (I tried, but I couldn't see which part of it in the code it must be).
Also, how much in any theme, visually, can be changed using CSS? If I choose another theme which has custom colour, I'm not sure if I can change the margins, etc. Some themes seem to have more changeable parts than others but it's difficult to tell beforehand. Are all the themes basically the same in that visually you can re-code any part of the CSS?
The blog I need help with is vanessastudio.wordpress.com.