1. The only problem is that the original TheBlogger icons react to hover by changing color (both in header menu – they become dark, and in the About page – they become white on dark circle), and my new icon doesn’t. Which looks kind of ugly in comparison. How can I make my custom icons react to mouse hover as well?
2. Another quesion is – what kind of picture is the optimum for these icons (in terms of picture size, file type, etc.)? I notice that my custom icon seems a bit blurry on the site as compared to original ones (I use PNG on transparent background), although it looks quite sharp when I view it in an image editor.