Okay... so my memory is getting really bad.... and I installed this a several years ago i think.... see screen shot... i did something that makes the bottom portion of the screen a darker color... and had some statistics (memory used, cpu usage, etc). Aside from the fact that some of these stats no longer are working now that I just updated to Yosemite... I have wanted to remove these for a while now. Can anyone be so kind as to tell me how to undo these? Edit: I found it. Geektool. Removed it from startup items and deleted the app.