Disclaimer: I tried to write on white paper just to see what would it would look like. The ink was sort of a cream color, but it was readable when you tilted the paper at a slight angle. This made me think it would be a good pen for "secret missions" for a secret agent kiddo.
Also disclaimer: I got excited that we needed to buy some dark colored paper so I could test out the pen.
I don't think anyone would be using this pen for serious writing, or use it for more than a few minutes at a time, but the grip makes it comfortable enough for extended use (such as if you were doodling for a long time). I think scrap bookers would really dig this pen, but I found a great use for it as well in my every day life - signing my signature on my photographs that have dark mats, especially since the Sunburst has acid free ink, a must for crafters.
All things considered, I like this pen. It was fun to play with and I think I will get some good use out of it. If White isn't your thing, the Sunburst is also available in these metallic colors: Red, Blue, Green, Bronze, Pink, Violet, Gold, and Silver.