diff --git a/README.md b/README.md
index 5f5fa08..b088f70 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,13 @@ This generates HTML and JSON reports in the `OCR-D-OCR-TESS-EVAL` filegroup.
 
 ![dinglehopper displaying metrics and character differences](.screenshots/dinglehopper.png?raw=true)
 
+You may also want to disable metrics and the green-red color scheme by
+parameter:
+
+~~~
+ocrd-dinglehopper -I ABBYY-FULLTEXT,OCR-D-OCR-CALAMARI -O OCR-D-OCR-COMPARE-ABBYY-CALAMARI -p '{"metrics": false}'
+~~~
+
 Testing
 -------
 Use `pytest` to run the tests in [the tests directory](qurator/dinglehopper/tests):
diff --git a/qurator/dinglehopper/ocrd-tool.json b/qurator/dinglehopper/ocrd-tool.json
index 4710f35..1f009ae 100644
--- a/qurator/dinglehopper/ocrd-tool.json
+++ b/qurator/dinglehopper/ocrd-tool.json
@@ -16,7 +16,14 @@
       ],
       "steps": [
         "recognition/text-recognition"
-      ]
+      ],
+      "parameters": {
+        "metrics": {
+          "type": "boolean",
+          "default": true,
+          "description": "Enable/disable metrics and green/red"
+        }
+      }
     }
   }
 }
diff --git a/qurator/dinglehopper/ocrd_cli.py b/qurator/dinglehopper/ocrd_cli.py
index a23dffd..d98c21c 100644
--- a/qurator/dinglehopper/ocrd_cli.py
+++ b/qurator/dinglehopper/ocrd_cli.py
@@ -34,6 +34,7 @@ class OcrdDinglehopperEvaluate(Processor):
         return file_id
 
     def process(self):
+        metrics = self.parameter['metrics']
         gt_grp, ocr_grp = self.input_file_grp.split(',')
         for n, page_id in enumerate(self.workspace.mets.physical_pages):
             gt_file = self.workspace.mets.find_files(fileGrp=gt_grp, pageId=page_id)[0]
@@ -50,7 +51,12 @@ class OcrdDinglehopperEvaluate(Processor):
                 os.mkdir(self.output_file_grp)
             except FileExistsError:
                 pass
-            cli_process(gt_file.local_filename, ocr_file.local_filename, report_prefix)
+            cli_process(
+                    gt_file.local_filename,
+                    ocr_file.local_filename,
+                    report_prefix,
+                    metrics=metrics
+            )
 
             # Add reports to the workspace
             for report_suffix, mimetype in \