diff --git a/terminal-ffm/src/main/java/org/jline/terminal/impl/ffm/FfmTerminalProvider.java b/terminal-ffm/src/main/java/org/jline/terminal/impl/ffm/FfmTerminalProvider.java
index 52fd200fb..828bd33af 100644
--- a/terminal-ffm/src/main/java/org/jline/terminal/impl/ffm/FfmTerminalProvider.java
+++ b/terminal-ffm/src/main/java/org/jline/terminal/impl/ffm/FfmTerminalProvider.java
@@ -110,4 +110,9 @@ public String systemStreamName(SystemStream stream) {
     public int systemStreamWidth(SystemStream stream) {
         return FfmNativePty.systemStreamWidth(stream);
     }
+
+    @Override
+    public String toString() {
+        return "TerminalProvider[" + name() + "]";
+    }
 }
diff --git a/terminal-jansi/src/main/java/org/jline/terminal/impl/jansi/JansiTerminalProvider.java b/terminal-jansi/src/main/java/org/jline/terminal/impl/jansi/JansiTerminalProvider.java
index 2d0c56409..bd1e56907 100644
--- a/terminal-jansi/src/main/java/org/jline/terminal/impl/jansi/JansiTerminalProvider.java
+++ b/terminal-jansi/src/main/java/org/jline/terminal/impl/jansi/JansiTerminalProvider.java
@@ -219,4 +219,9 @@ public String systemStreamName(SystemStream stream) {
     public int systemStreamWidth(SystemStream stream) {
         return JansiNativePty.systemStreamWidth(stream);
     }
+
+    @Override
+    public String toString() {
+        return "TerminalProvider[" + name() + "]";
+    }
 }
diff --git a/terminal-jna/src/main/java/org/jline/terminal/impl/jna/JnaTerminalProvider.java b/terminal-jna/src/main/java/org/jline/terminal/impl/jna/JnaTerminalProvider.java
index 2b219a817..bd0e9405f 100644
--- a/terminal-jna/src/main/java/org/jline/terminal/impl/jna/JnaTerminalProvider.java
+++ b/terminal-jna/src/main/java/org/jline/terminal/impl/jna/JnaTerminalProvider.java
@@ -141,4 +141,9 @@ public int systemStreamWidth(SystemStream stream) {
             return -1;
         }
     }
+
+    @Override
+    public String toString() {
+        return "TerminalProvider[" + name() + "]";
+    }
 }
diff --git a/terminal-jni/src/main/java/org/jline/terminal/impl/jni/JniTerminalProvider.java b/terminal-jni/src/main/java/org/jline/terminal/impl/jni/JniTerminalProvider.java
index a1581ad20..4ac4c1cae 100644
--- a/terminal-jni/src/main/java/org/jline/terminal/impl/jni/JniTerminalProvider.java
+++ b/terminal-jni/src/main/java/org/jline/terminal/impl/jni/JniTerminalProvider.java
@@ -158,4 +158,9 @@ public String systemStreamName(SystemStream stream) {
     public int systemStreamWidth(SystemStream stream) {
         return JniNativePty.systemStreamWidth(stream);
     }
+
+    @Override
+    public String toString() {
+        return "TerminalProvider[" + name() + "]";
+    }
 }
diff --git a/terminal/src/main/java/org/jline/terminal/impl/DumbTerminalProvider.java b/terminal/src/main/java/org/jline/terminal/impl/DumbTerminalProvider.java
index c5facb312..f505c77a2 100644
--- a/terminal/src/main/java/org/jline/terminal/impl/DumbTerminalProvider.java
+++ b/terminal/src/main/java/org/jline/terminal/impl/DumbTerminalProvider.java
@@ -81,4 +81,9 @@ public String systemStreamName(SystemStream stream) {
     public int systemStreamWidth(SystemStream stream) {
         return 0;
     }
+
+    @Override
+    public String toString() {
+        return "TerminalProvider[" + name() + "]";
+    }
 }
diff --git a/terminal/src/main/java/org/jline/terminal/impl/exec/ExecTerminalProvider.java b/terminal/src/main/java/org/jline/terminal/impl/exec/ExecTerminalProvider.java
index 580a761b3..61103668c 100644
--- a/terminal/src/main/java/org/jline/terminal/impl/exec/ExecTerminalProvider.java
+++ b/terminal/src/main/java/org/jline/terminal/impl/exec/ExecTerminalProvider.java
@@ -252,4 +252,9 @@ public ProcessBuilder.Redirect newRedirectPipe(FileDescriptor fd) {
             return JLineLibrary.newRedirectPipe(fd);
         }
     }
+
+    @Override
+    public String toString() {
+        return "TerminalProvider[" + name() + "]";
+    }
 }
diff --git a/terminal/src/main/java/org/jline/utils/ColorPalette.java b/terminal/src/main/java/org/jline/utils/ColorPalette.java
index 22f52dbff..ebc32ce5a 100644
--- a/terminal/src/main/java/org/jline/utils/ColorPalette.java
+++ b/terminal/src/main/java/org/jline/utils/ColorPalette.java
@@ -265,4 +265,9 @@ private static int[] doLoad(Terminal terminal) throws IOException {
             ;
         return Arrays.copyOfRange(palette, 0, max + 1);
     }
+
+    @Override
+    public String toString() {
+        return "ColorPalette[" + "length=" + getLength() + ", " + "distance='" + getDist() + "\']";
+    }
 }
diff --git a/terminal/src/main/java/org/jline/utils/Colors.java b/terminal/src/main/java/org/jline/utils/Colors.java
index 30b33e522..de3b5af25 100644
--- a/terminal/src/main/java/org/jline/utils/Colors.java
+++ b/terminal/src/main/java/org/jline/utils/Colors.java
@@ -211,7 +211,7 @@ static Distance getDistance(String dist) {
         if (dist == null) {
             dist = System.getProperty(PROP_COLOR_DISTANCE, "cie76");
         }
-        return doGetDistance(dist);
+        return new NamedDistance(dist, doGetDistance(dist));
     }
 
     private static Distance doGetDistance(String dist) {
@@ -291,6 +291,26 @@ private static double scalar(double[] c1, double[] c2) {
         return sqr(c1[0] - c2[0]) + sqr(c1[1] - c2[1]) + sqr(c1[2] - c2[2]);
     }
 
+    private static class NamedDistance implements Distance {
+        private final String name;
+        private final Distance delegate;
+
+        public NamedDistance(String name, Distance delegate) {
+            this.name = name;
+            this.delegate = delegate;
+        }
+
+        @Override
+        public double compute(int c1, int c2) {
+            return delegate.compute(c1, c2);
+        }
+
+        @Override
+        public String toString() {
+            return name;
+        }
+    }
+
     private static final int L = 0;
     private static final int A = 1;
     private static final int B = 2;
diff --git a/terminal/src/main/java/org/jline/utils/Status.java b/terminal/src/main/java/org/jline/utils/Status.java
index d301d3df2..5f5d2ff49 100644
--- a/terminal/src/main/java/org/jline/utils/Status.java
+++ b/terminal/src/main/java/org/jline/utils/Status.java
@@ -190,4 +190,9 @@ public void restore() {
     public int size() {
         return oldLines.size() + border;
     }
+
+    @Override
+    public String toString() {
+        return "Status[" + "supported=" + supported + ']';
+    }
 }