Thx for the welcome
After reading this I could not help but go and photoshop (don't know why I say that since I prefer Gimp) a screen shot of the blocks. I took the screeny before I reread the quote obove and saw that I could increase the amount of squares I see, thx for that.
As you should be able to see in the atached image, the 4 difrent colors that are used for showing fragmentation, partial fragmentation and empty, no fragmantation and what I think is not fragmented and partialy empty (since not fraged and fraged should logicly be somthing along the lines of bluish red). I also added the colors to the legend wich seems to make it easier to veiw the diffrences.
Btw, heres the colors in hexadecimal:
Not Fragmented (dark): #0000ff
Not Fragmented (light): #7d7dff
Fragmented (dark): #ff0000
Fragmented (light): #ff3c3c
Hope that helps (fix) the confusion
The Panda