They can be launched with the command fpm run --example name_of_the_example (without the .f90 extension):

• demo.f90 creates demo PPM files for each built-in colormap, plus a PPM file with the corresponding colorbars. It also demonstrates how to create your own colormap defined in an array, how to download a colormap from a .txt file.
• demo_reverse.f90 demonstrates the usage of the reverse=.true. option to reverse the direction of a colormap.
• example1.f90 demonstrates how ForImage can be used to import/export PPM files.
• create.f90 demonstrates creating a custom colormap using methods like create_lagrange() and create_bezier().
• extract.f90 demonstrates how to create a specific colormap by extracting a specified number of colors of a colormap.
• info.f90 demonstrates how to obtain information about a colormap using the Colormaps_info class.
• modify.f90 demonstrates how you can modify a colormap with methods like shift(), in concrete cases.
• colormaps_list.f90 is creating the colormaps_list/COLORMAPS_LIST_*.md files using the Colormaps_info class.