This is actually very helpful, thank you. I don't need graph paper often, but my kids are old enough now that school assignments require it, and having to go to walmart for a book of graph paper is annoying.

I tried printing Gray, Dark, and Black on an HP LaserJet, but the colors were very faint in all cases. It was hard to see the grid.

Wow, this is very good and helpful. Thanks for this! I use the PDF on a tablet.