Here is an enhanced version of CAD Tip No. 3645, “Change Entity Colors,” by Tommy Shumpert. This new version, authored by Kent Cooper, supersedes the versions posted as comments on that earlier tip. The enhancement is that this update also defines the color-name words (“Red,” etc., including both “White” and “Black”), as well as the words “ByLayer” and “ByBlock,” as commands that can be used in the same way as the color number command names. You can type “Green,” for example, and get the same effect as typing “3.” You don’t need to know that 256 is the “color” number you need for ByLayer, but can just type ByLayer as a command.