I was also a little confused about your guide, but discovered very quickly where the confusion was coming from. You kept making mention of a file called current.btskin which didn't make any sense as the download link gave us a file called Old_Graph_Style_in_uTorrent_3.zip with an unknown file called btskin inside. No extraction is nessessary to get it to work. All you have to do is download that zip file, change the file name (and extension) to current.btskin, and open that file in uTorrent. The next time you restart uTorrent it will have the Graph with the Blue background. I was also a little dissapointed that the line colours wern't the same as they were in version 2, and If I have time I might make my own btskin file to fix this and upload it.