diff --git a/package-lock.json b/package-lock.json
index 125cded..b30bbcb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -130,7 +130,7 @@
     },
     "any-promise": {
       "version": "1.3.0",
-      "resolved": "https://npm-registry.harver-dev.com/any-promise/-/any-promise-1.3.0.tgz",
+      "resolved": "https://registry.npmjs.org/any-promise/-/any-promise-1.3.0.tgz",
       "integrity": "sha1-q8av7tzqUugJzcA3au0845Y10X8=",
       "dev": true
     },
@@ -230,7 +230,7 @@
     },
     "becke-ch--regex--s0-0-v1--base--pl--lib": {
       "version": "1.4.0",
-      "resolved": "https://npm-registry.harver-dev.com/becke-ch--regex--s0-0-v1--base--pl--lib/-/becke-ch--regex--s0-0-v1--base--pl--lib-1.4.0.tgz",
+      "resolved": "https://registry.npmjs.org/becke-ch--regex--s0-0-v1--base--pl--lib/-/becke-ch--regex--s0-0-v1--base--pl--lib-1.4.0.tgz",
       "integrity": "sha1-Qpzuu/pffpNueNc/vcfacWKyDiA=",
       "dev": true
     },
@@ -412,7 +412,7 @@
     },
     "cli-table3": {
       "version": "0.5.1",
-      "resolved": "https://npm-registry.harver-dev.com/cli-table3/-/cli-table3-0.5.1.tgz",
+      "resolved": "https://registry.npmjs.org/cli-table3/-/cli-table3-0.5.1.tgz",
       "integrity": "sha512-7Qg2Jrep1S/+Q3EceiZtQcDPWxhAvBw+ERf1162v4sikJrvojMHFqXt8QIVha8UlH9rgU0BeWPytZ9/TzYqlUw==",
       "dev": true,
       "requires": {
@@ -996,7 +996,7 @@
     },
     "d": {
       "version": "1.0.1",
-      "resolved": "https://npm-registry.harver-dev.com/d/-/d-1.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/d/-/d-1.0.1.tgz",
       "integrity": "sha512-m62ShEObQ39CfralilEQRjH6oAMtNCV1xJyEx5LpRYUVN+EviphDgUc/F3hnYbADmkiNs67Y+3ylmlG7Lnu+FA==",
       "dev": true,
       "requires": {
@@ -1230,7 +1230,7 @@
     },
     "duration": {
       "version": "0.2.2",
-      "resolved": "https://npm-registry.harver-dev.com/duration/-/duration-0.2.2.tgz",
+      "resolved": "https://registry.npmjs.org/duration/-/duration-0.2.2.tgz",
       "integrity": "sha512-06kgtea+bGreF5eKYgI/36A6pLXggY7oR4p1pq4SmdFBn1ReOL5D8RhG64VrqfTTKNucqqtBAwEj8aB88mcqrg==",
       "dev": true,
       "requires": {
@@ -1293,7 +1293,7 @@
     },
     "es6-iterator": {
       "version": "2.0.3",
-      "resolved": "https://npm-registry.harver-dev.com/es6-iterator/-/es6-iterator-2.0.3.tgz",
+      "resolved": "https://registry.npmjs.org/es6-iterator/-/es6-iterator-2.0.3.tgz",
       "integrity": "sha1-p96IkUGgWpSwhUQDstCg+/qY87c=",
       "dev": true,
       "requires": {
@@ -2455,7 +2455,7 @@
     },
     "is-generator": {
       "version": "1.0.3",
-      "resolved": "https://npm-registry.harver-dev.com/is-generator/-/is-generator-1.0.3.tgz",
+      "resolved": "https://registry.npmjs.org/is-generator/-/is-generator-1.0.3.tgz",
       "integrity": "sha1-wUwhBX7TbjKNuANHlmxpP4hjifM=",
       "dev": true
     },
@@ -2633,6 +2633,15 @@
         "walk-back": "^3.0.1"
       }
     },
+    "json-colorizer": {
+      "version": "2.2.2",
+      "resolved": "https://registry.npmjs.org/json-colorizer/-/json-colorizer-2.2.2.tgz",
+      "integrity": "sha512-56oZtwV1piXrQnRNTtJeqRv+B9Y/dXAYLqBBaYl/COcUdoZxgLBLAO88+CnkbT6MxNs0c5E9mPBIb2sFcNz3vw==",
+      "requires": {
+        "chalk": "^2.4.1",
+        "lodash.get": "^4.4.2"
+      }
+    },
     "json-parse-better-errors": {
       "version": "1.0.2",
       "resolved": "https://npm-registry.harver-dev.com/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz",
@@ -2688,7 +2697,7 @@
     },
     "knuth-shuffle-seeded": {
       "version": "1.0.6",
-      "resolved": "https://npm-registry.harver-dev.com/knuth-shuffle-seeded/-/knuth-shuffle-seeded-1.0.6.tgz",
+      "resolved": "https://registry.npmjs.org/knuth-shuffle-seeded/-/knuth-shuffle-seeded-1.0.6.tgz",
       "integrity": "sha1-AfG2VzOqdUDuCNiwF0Fk0iCB5OE=",
       "dev": true,
       "requires": {
@@ -2819,7 +2828,7 @@
     },
     "lower-case": {
       "version": "1.1.4",
-      "resolved": "https://npm-registry.harver-dev.com/lower-case/-/lower-case-1.1.4.tgz",
+      "resolved": "https://registry.npmjs.org/lower-case/-/lower-case-1.1.4.tgz",
       "integrity": "sha1-miyr0bno4K6ZOkv31YdcOcQujqw=",
       "dev": true
     },
@@ -2993,7 +3002,7 @@
     },
     "mz": {
       "version": "2.7.0",
-      "resolved": "https://npm-registry.harver-dev.com/mz/-/mz-2.7.0.tgz",
+      "resolved": "https://registry.npmjs.org/mz/-/mz-2.7.0.tgz",
       "integrity": "sha512-z81GNO7nnYMEhrGh9LeymoE4+Yr0Wn5McHIZMK5cfQCl+NDX08sCZgUc9/6MHni9IWuFLm1Z3HTCXu2z9fN62Q==",
       "dev": true,
       "requires": {
@@ -3022,7 +3031,7 @@
     },
     "next-tick": {
       "version": "1.0.0",
-      "resolved": "https://npm-registry.harver-dev.com/next-tick/-/next-tick-1.0.0.tgz",
+      "resolved": "https://registry.npmjs.org/next-tick/-/next-tick-1.0.0.tgz",
       "integrity": "sha1-yobR/ogoFpsBICCOPchCS524NCw=",
       "dev": true
     },
@@ -3034,7 +3043,7 @@
     },
     "no-case": {
       "version": "2.3.2",
-      "resolved": "https://npm-registry.harver-dev.com/no-case/-/no-case-2.3.2.tgz",
+      "resolved": "https://registry.npmjs.org/no-case/-/no-case-2.3.2.tgz",
       "integrity": "sha512-rmTZ9kz+f3rCvK2TD1Ue/oZlns7OGoIWP4fc3llxxRXlOkHKoWPPWJOfFYpITabSow43QJbRIoHQXtt10VldyQ==",
       "dev": true,
       "requires": {
@@ -3221,7 +3230,7 @@
     },
     "pad-right": {
       "version": "0.2.2",
-      "resolved": "https://npm-registry.harver-dev.com/pad-right/-/pad-right-0.2.2.tgz",
+      "resolved": "https://registry.npmjs.org/pad-right/-/pad-right-0.2.2.tgz",
       "integrity": "sha1-b7ySQEXSRPKiokRQMGDTv8YAl3Q=",
       "dev": true,
       "requires": {
@@ -3544,7 +3553,7 @@
     },
     "repeat-string": {
       "version": "1.6.1",
-      "resolved": "https://npm-registry.harver-dev.com/repeat-string/-/repeat-string-1.6.1.tgz",
+      "resolved": "https://registry.npmjs.org/repeat-string/-/repeat-string-1.6.1.tgz",
       "integrity": "sha1-jcrkcOHIirwtYA//Sndihtp15jc=",
       "dev": true
     },
@@ -3643,7 +3652,7 @@
     },
     "seed-random": {
       "version": "2.2.0",
-      "resolved": "https://npm-registry.harver-dev.com/seed-random/-/seed-random-2.2.0.tgz",
+      "resolved": "https://registry.npmjs.org/seed-random/-/seed-random-2.2.0.tgz",
       "integrity": "sha1-KpsZ4lCoFwmSMaW5mk2vgLf77VQ=",
       "dev": true
     },
@@ -3790,7 +3799,7 @@
     },
     "source-map": {
       "version": "0.5.6",
-      "resolved": "https://npm-registry.harver-dev.com/source-map/-/source-map-0.5.6.tgz",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.6.tgz",
       "integrity": "sha1-dc449SvwczxafwwRjYEzSiu19BI=",
       "dev": true
     },
@@ -3893,7 +3902,7 @@
     },
     "stack-chain": {
       "version": "2.0.0",
-      "resolved": "https://npm-registry.harver-dev.com/stack-chain/-/stack-chain-2.0.0.tgz",
+      "resolved": "https://registry.npmjs.org/stack-chain/-/stack-chain-2.0.0.tgz",
       "integrity": "sha512-GGrHXePi305aW7XQweYZZwiRwR7Js3MWoK/EHzzB9ROdc75nCnjSJVi21rdAGxFl+yCx2L2qdfl5y7NO4lTyqg==",
       "dev": true
     },
@@ -4225,7 +4234,7 @@
     },
     "thenify-all": {
       "version": "1.6.0",
-      "resolved": "https://npm-registry.harver-dev.com/thenify-all/-/thenify-all-1.6.0.tgz",
+      "resolved": "https://registry.npmjs.org/thenify-all/-/thenify-all-1.6.0.tgz",
       "integrity": "sha1-GhkY1ALY/D+Y+/I02wvMjMEOlyY=",
       "dev": true,
       "requires": {
@@ -4249,7 +4258,7 @@
     },
     "title-case": {
       "version": "2.1.1",
-      "resolved": "https://npm-registry.harver-dev.com/title-case/-/title-case-2.1.1.tgz",
+      "resolved": "https://registry.npmjs.org/title-case/-/title-case-2.1.1.tgz",
       "integrity": "sha1-PhJyFtpY0rxb7PE3q5Ha46fNj6o=",
       "dev": true,
       "requires": {
@@ -4381,7 +4390,7 @@
     },
     "upper-case": {
       "version": "1.1.3",
-      "resolved": "https://npm-registry.harver-dev.com/upper-case/-/upper-case-1.1.3.tgz",
+      "resolved": "https://registry.npmjs.org/upper-case/-/upper-case-1.1.3.tgz",
       "integrity": "sha1-9rRQHC7EzdJrp4vnIilh3ndiFZg=",
       "dev": true
     },
@@ -4395,7 +4404,7 @@
     },
     "util-arity": {
       "version": "1.1.0",
-      "resolved": "https://npm-registry.harver-dev.com/util-arity/-/util-arity-1.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/util-arity/-/util-arity-1.1.0.tgz",
       "integrity": "sha1-WdAa8f2z/t4KxOYysKtfbOl8kzA=",
       "dev": true
     },
diff --git a/package.json b/package.json
index 5abac40..b731d76 100644
--- a/package.json
+++ b/package.json
@@ -32,6 +32,7 @@
     "chai-match": "^1.1.1",
     "chalk": "^2.4.2",
     "cookie": "^0.4.0",
+    "json-colorizer": "^2.2.2",
     "jsonpath-plus": "^1.0.0",
     "openapi-schema-to-json-schema": "^2.2.0",
     "superagent": "^5.1.0",
diff --git a/src/world.js b/src/world.js
index fd00da2..0e40543 100644
--- a/src/world.js
+++ b/src/world.js
@@ -18,6 +18,7 @@ const { parse: parseUrl } = require('url');
 const chalk = require('chalk');
 const request = require('superagent');
 const SwaggerParser = require('swagger-parser');
+const colorize = require('json-colorizer');
 
 const agents = new Map();
 const responseCache = new Map();
@@ -52,6 +53,16 @@ class World {
         this.env = process.env.TEST_ENV || null;
         this.responseVars = [];
         this.userVars = [];
+
+        this.debugLogOptions = {
+            pretty: true,
+            colors: {
+            // Colors convention can be negotiated.
+                STRING_KEY: 'green',
+                STRING_LITERAL: 'yellow',
+                NUMBER_LITERAL: 'red',
+            },
+        };
     }
 
     /**
@@ -289,7 +300,11 @@ async function printDebug(info) {
     if (this.debug.length) {
         console.log('\n' + sep + '\n');
         for (const line of this.debug) {
-            console.log(line);
+            try {
+                console.log(colorize(line, this.debugLogOptions));
+            } catch (error){
+                console.log(line);
+            }
         }
         console.log('\n' + sep + '\n');
     }
@@ -304,7 +319,7 @@ async function printDebug(info) {
             console.log('Url:\n');
             console.log(this.req.url);
             console.log('\nResponse body:\n');
-            console.log(res.body);
+            console.log(colorize(res.body, this.debugLogOptions));
             console.log('\n' + sep + '\n');
         }