Black Cat Systems has updated Graph Paper Maker (http://www.blackcatsystems.com/software/graphmaker.html), Mac OS X software for creating custom sheets of graph paper, to version 1.6.0. The latest version adds the ability to set the background color of produced charts, as well as plot marker points on graphs with logarithmic, hydraulic, and probability axes.
With Graph Paper Maker, you can control the graph characteristics. X and Y axis can independently be set for linear or log scale, and scaling. Youc an select from a dozen standard paper sizes, or custom create your own. Graphs can be saved as PDF files, and you can choose whatever color you want for the lines. Also, you can specify independent line weights for the X and Y axis lines.
Graph Paper Maker costs US$19.99, though version 2.2.0 is a free update for registered users. It works with Mac OS X 10.2 and later. Graph Paper Maker is Universal Binary so runs natively on both PowerPC and Intel Macs.