First, you must enable it in the
feature.conf file before compiling.
Second, you must run ELinks on a terminal that supports 256 colours:
Third, you must set the
TERM environmental variable to
before running ELinks.
Although the Linux frame-buffer supports 256 (or more) colors, the Linux console driver does not; therefore, console applications are still limited to 16 colors on the Linux console, frame-buffer or not.