So I'm not really a computer buff, but I am getting into photography so i just got the aperture 2 trial to test it out and there were a couple things i noticed. One was that the three little buttons for closing and minimizing and maximizing were gray like the graphite appearance settings, and that the menu bar at the top loses the transparent setting and becomes opaque like in tiger when ever im in the application, but if I go into a different one, things go back to normal. So my first question, is it normal for aperture to have its own "theme" and also, I have the iStat pro widget and I noticed that whenever i use aperture, active memory jumps to 1+ gb and free is down to about 300mb (i have 2 gb), and when I quit aperture, it doesn't change, it stays the same, even if I quit all applications, but when I restart my computer it goes back to about 1.3gb of free memory. is this normal?