TeXShop ⇒ Change Colors for Syntax Parsing

[murraye]

By default, the various colors used in TeXShop to indicate (La)TeX commands (blue), ordinary text and surprisingly, in-line math (black), comments (red) is horrible: not only ugly, but with so much contrast as to be distracting to the eye.

How can one change the colors for the various elements -- to a scheme that's more subtle and less distracting?