This is a kelly green 60-sided die, made by request for your St. Patrick's Day gaming. I don't know how legible the black numbers will be on this shade of green. I know that this shape will result in a single number facing up when rolled (some 60-sided polyhedrons will not do this). It is solid inside, with no filler material. The die might be a little too small to read some numbers easily (or it might be larger than it needs to be), but I don't think that should be an issue unless there happens to be a really poor printing job.