Add --force-enable-colors

src/config/args.rs

@@ -185,6 +185,10 @@ It's possible to overwrite this behavior by specifying the option")
             Arg::with_name("disable-colors")
                 .long("disable-colors")
         )
+        .arg(
+            Arg::with_name("force-enable-colors")
+                .long("force-enable-colors")
+        )
         .arg(
             Arg::with_name("disable-trustdns")
                 .long("disable-trustdns")
@@ -553,6 +557,11 @@ Increase the amount of workers to remove the error or use --force.")?;
         colored::control::set_override(false);
     }
 
+    // force enable colors to preseve colors while redirecting output
+    if args.is_present("force-enable-colors") {
+        colored::control::set_override(true);
+    }
+
     // decrease verbose by 1 in case > 1 url is being checked in parallel
     // this behavior is explained in docs
     let verbose = if verbose > 0 && !(workers == 1 || urls.len() == 1) {