Vin,
The beard looks great, man! As others have said, the contrasting colors look awesome. As for your question, I honestly didn't even notice the disparity in the 'stache ends until you mentioned it. The body and color of the overall beard draw attention to the overall look and not so much just on the mustache itself. Your 'stache is also very full which makes such a small detail that much more miniscule. By the looks it may sort itself out with a little more length and help from gravity. Look forward to more updates!