I bought a 24 pack of sharpies and the colors are great! There are some bright ones too. I would be more scared on a bright one too though. I just dabbed very lightly at first to see the color and then I blended it with my fingers. I don't have a before picture but I'll post an after later
Doesn't that work great!? I also bought a pack of 24 Bic markers from Walmart that have a great selection of colors.
If it's a teeny spot, I use a napkin that I have twisted into a point. But if it's larger, like a lot of the corner, I mark on the end of my index finger then lightly smudge it on the corner.....repeat if necessary. Works great for me, even fuchsia!
I wait until the next day and then spray with Apple rain & stain to help protect the newly colored corners from getting color worn for a while.