I recently finished my first holster.  I did some research and found out about vinegaroon and whipped up a batch.  I must admit, I am not too impressed with the shade of black or the eveness of the color.  Below are some pictures of what I am talking about.  Here are a few questions: 
The spots that did not turn black are places where I did not clean off the rubber cement sufficiently.  Can I use acetone on the black surface, clean them up and then maybe brush some more of the vinegaroon on (if there is a better way, please do tell     ) 
There is a faded part around the barrel portion of the holster.  Any suggestions on how to fix this? 
After I wiped it all down with some alcohol, I soaked the holster in some black tea for a few minutes and then dipped it in the vinegaroon for about a minute, let it sit for about 5 minutes, and then let it sit in a baking soda solution until the fizzing stopped.  I then had to wet-mold the holster again.  I still have to burnish the edges and I have not yet applied any oil or any finish like that yet because I want to fix the color first. I also was afraid to add oil to it because I don't want it getting soft so it is sure to hold the pistol in nice and snug.  Hopefully these pictures will show up well enough for you all to see what I am talking about. 
Thanks for your input!