The challenges with coloring my hair

(Chapter 3 Memory Problems in my book)

Yesterday, before I took a shower, I colored my roots in order to cover up a little gray hair. I think that I usually do this about every four weeks. When I'm mixing the color with the developer, I have to remind myself that the color is very dark, but my hair doesn't come out that dark. If I don't remember to do this, I will panic and not leave it on long enough and it won't cover up the gray hair that well. It is sometimes difficult for me to remember this, but I just do the best that I can. Sometimes when I color my hair, everything will be fine and I won't worry about what the color looks like before I put it on my hair.