Hairmarker Temporary in Dark Brown

This is wonderful stuff! I use it in a rather unconventional way, though. My hair is probably about 70% silver now. I like it that way but I don't like the fact that I don't have any of my dark...

I was looking for something that would cover a few grays around the crown of my head (near the front). I have really dark brown hair and grays show up so much, but I don't have them throughout my...