Enhancement - colors report

- Implemented colors report.
- Commented out all other commands and reports.
- Eliminated obsolete findT function.

src/task.cpp

@@ -460,7 +460,6 @@ std::string runTaskCommand (
   else if (command == "calendar")           { out = handleReportCalendar  (tdb, task); }
   else if (command == "summary")            { out = handleReportSummary   (tdb, task); }
   else if (command == "timesheet")          { out = handleReportTimesheet (tdb, task); }
-  else if (command == "colors")             { out = handleColor           (         ); }
   else if (command == "version")            { out = handleVersion         (         ); }
   else if (command == "help")               { out = longUsage             (         ); }