You have the option of assigning a color to each of your documents. This color is then used in all tables and visualizations, including in MAXMaps.

To assign a color, right-click on the document and select Color from the context menu that appears. A dialog window appears which lists the colors used in the project. Standard colors, (i.e. for color coding) are indicated by name (here "GREEN").

There is an almost endless number of colors that you can pick from for your documents, and you can theoretically mix your own by entering values into the fields on the right side of the window, although it makes sense to limit the number of colors you use in a single project.

The document colors are usually listed in the first column of tables in MAXQDA, which means you can then use them as sort criteria. By clicking on the column header, you will sort that column, grouping together those documents with the same assigned color.