I did it! It's not perfect. The roots are less dark than the rest, and the gray there is not completely covered, but it's passable. It's darker brown than I wanted but I it will fade well and I'll adjust the formula next time. Whew! It was wild. I expected to meet with an important person next week and I didn't want to look crazy. I should have heard from the person to schedule the meeting but I haven't. Well.
More bullshit from another source. I tried.