diff --git a/packages/neutrino-middleware-font-loader/index.js b/packages/neutrino-middleware-font-loader/index.js
index ef5770a..e5800bd 100644
--- a/packages/neutrino-middleware-font-loader/index.js
+++ b/packages/neutrino-middleware-font-loader/index.js
@@ -10,18 +10,19 @@ module.exports = ({ config }, options) => {
     .test(/\.(woff|woff2)(\?v=\d+\.\d+\.\d+)?$/)
     .use('url')
       .loader(urlLoader)
-      .options({ limit, mimetype: 'application/font-woff' });
+      .options(merge({ limit, mimetype: 'application/font-woff' }, options.woff || {}));
 
   config.module
     .rule('ttf')
     .test(/\.ttf(\?v=\d+\.\d+\.\d+)?$/)
     .use('url')
       .loader(urlLoader)
-      .options({ limit, mimetype: 'application/octet-stream' });
+      .options(merge({ limit, mimetype: 'application/octet-stream' }, options.ttf || {}));
 
   config.module
     .rule('eot')
     .test(/\.eot(\?v=\d+\.\d+\.\d+)?$/)
     .use('file')
-      .loader(fileLoader);
+      .loader(fileLoader)
+      .when(options.eot, use => use.options(options.eot));
 };
diff --git a/packages/neutrino-middleware-html-loader/index.js b/packages/neutrino-middleware-html-loader/index.js
index 6897899..61216a1 100644
--- a/packages/neutrino-middleware-html-loader/index.js
+++ b/packages/neutrino-middleware-html-loader/index.js
@@ -1,6 +1,8 @@
-module.exports = ({ config }) => config.module
+const merge = require('deepmerge');
+
+module.exports = ({ config }, options) => config.module
   .rule('html')
   .test(/\.html$/)
   .use('file')
     .loader(require.resolve('file-loader'))
-    .options({ name: '[name].[ext]' });
+    .options(merge({ name: '[name].[ext]' }, options));
diff --git a/packages/neutrino-middleware-html-loader/package.json b/packages/neutrino-middleware-html-loader/package.json
index 76e8bc3..3f5dc81 100644
--- a/packages/neutrino-middleware-html-loader/package.json
+++ b/packages/neutrino-middleware-html-loader/package.json
@@ -14,6 +14,7 @@
   "homepage": "https://neutrino.js.org",
   "bugs": "https://github.com/mozilla-neutrino/neutrino-dev/issues",
   "dependencies": {
+    "deepmerge": "^1.3.2",
     "file-loader": "^0.10.1"
   },
   "peerDependencies": {
diff --git a/packages/neutrino-middleware-html-loader/yarn.lock b/packages/neutrino-middleware-html-loader/yarn.lock
index 1397131..8c44240 100644
--- a/packages/neutrino-middleware-html-loader/yarn.lock
+++ b/packages/neutrino-middleware-html-loader/yarn.lock
@@ -6,6 +6,10 @@ big.js@^3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/big.js/-/big.js-3.1.3.tgz#4cada2193652eb3ca9ec8e55c9015669c9806978"
 
+deepmerge@^1.3.2:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-1.3.2.tgz#1663691629d4dbfe364fa12a2a4f0aa86aa3a050"
+
 emojis-list@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/emojis-list/-/emojis-list-2.1.0.tgz#4daa4d9db00f9819880c79fa457ae5b09a1fd389"
diff --git a/packages/neutrino-middleware-image-loader/index.js b/packages/neutrino-middleware-image-loader/index.js
index c210c81..635960c 100644
--- a/packages/neutrino-middleware-image-loader/index.js
+++ b/packages/neutrino-middleware-image-loader/index.js
@@ -10,18 +10,19 @@ module.exports = ({ config }, options) => {
     .test(/\.svg(\?v=\d+\.\d+\.\d+)?$/)
     .use('url')
       .loader(svgUrlLoader)
-      .options({ limit });
+      .options(merge({ limit }, options.svg || {}));
 
   config.module
     .rule('img')
     .test(/\.(png|jpg|jpeg|gif)$/)
     .use('url')
       .loader(urlLoader)
-      .options({ limit });
+      .options(merge({ limit }, options.img || {}));
 
   config.module
     .rule('ico')
     .test(/\.ico(\?v=\d+\.\d+\.\d+)?$/)
     .use('url')
-      .loader(urlLoader);
+      .loader(urlLoader)
+      .when(options.ico, use => use.options(options.ico));
 };
diff --git a/packages/neutrino-middleware-minify/index.js b/packages/neutrino-middleware-minify/index.js
index e1aaef3..0ac633f 100644
--- a/packages/neutrino-middleware-minify/index.js
+++ b/packages/neutrino-middleware-minify/index.js
@@ -1,3 +1,6 @@
 const BabiliPlugin = require('babili-webpack-plugin');
 
-module.exports = ({ config }) => config.plugin('minify').use(BabiliPlugin);
+module.exports = ({ config }, options) => config
+  .plugin('minify')
+  .use(BabiliPlugin)
+  .when(options, plugin => plugin.tap(() => [options]));
diff --git a/packages/neutrino-middleware-style-loader/index.js b/packages/neutrino-middleware-style-loader/index.js
index ba95fa1..1aee0f9 100644
--- a/packages/neutrino-middleware-style-loader/index.js
+++ b/packages/neutrino-middleware-style-loader/index.js
@@ -1,8 +1,10 @@
-module.exports = ({ config }) => config.module
+module.exports = ({ config }, options) => config.module
   .rule('style')
-  .test(/\.css$/)
-    .use('style')
-      .loader(require.resolve('style-loader'))
-      .end()
-    .use('css')
-      .loader(require.resolve('css-loader'));
+    .test(/\.css$/)
+      .use('style')
+        .loader(require.resolve('style-loader'))
+        .when(options.style, use => use.options(options.style))
+        .end()
+      .use('css')
+        .loader(require.resolve('css-loader'))
+        .when(options.css, use => use.options(options.css));
diff --git a/packages/neutrino/src/api.js b/packages/neutrino/src/api.js
index 670215d..8cfb816 100644
--- a/packages/neutrino/src/api.js
+++ b/packages/neutrino/src/api.js
@@ -11,15 +11,65 @@ const start = require('./start');
 const test = require('./test');
 
 const getOptions = (options = {}) => {
-  const root = normalizePath(process.cwd(), defaultTo('', options.root));
-  const base = normalizePath(root);
-  const source = base(defaultTo('src', options.source));
-  const output = base(defaultTo('build', options.output));
-  const tests = base(defaultTo('test', options.tests));
-  const node_modules = base(defaultTo('node_modules', options.node_modules)); // eslint-disable-line camelcase
-  const entry = normalizePath(source, defaultTo('index.js', options.entry));
+  let root = defaultTo('', options.root);
+  let source = defaultTo('src', options.source);
+  let output = defaultTo('build', options.output);
+  let tests = defaultTo('test', options.tests);
+  let node_modules = defaultTo('node_modules', options.node_modules); // eslint-disable-line camelcase
+  let entry = defaultTo('index.js', options.entry);
 
-  return merge(options, { root, source, output, tests, node_modules, entry });
+  Object.defineProperties(options, {
+    root: {
+      get() {
+        return normalizePath(process.cwd(), root);
+      },
+      set(value) {
+        root = defaultTo('', value);
+      }
+    },
+    source: {
+      get() {
+        return normalizePath(this.root, source);
+      },
+      set(value) {
+        source = defaultTo('src', value);
+      }
+    },
+    output: {
+      get() {
+        return normalizePath(this.root, output);
+      },
+      set(value) {
+        output = defaultTo('build', value);
+      }
+    },
+    tests: {
+      get() {
+        return normalizePath(this.root, tests);
+      },
+      set(value) {
+        tests = defaultTo('test', value);
+      }
+    },
+    node_modules: {
+      get() {
+        return normalizePath(this.root, node_modules);
+      },
+      set(value) {
+        node_modules = defaultTo('node_modules', value); // eslint-disable-line camelcase
+      }
+    },
+    entry: {
+      get() {
+        return normalizePath(this.source, entry);
+      },
+      set(value) {
+        entry = defaultTo('index.js', value);
+      }
+    }
+  });
+
+  return options;
 };
 
 // Api :: () -> Object
diff --git a/packages/neutrino/test/api_test.js b/packages/neutrino/test/api_test.js
index 8eba51f..dfde6e0 100644
--- a/packages/neutrino/test/api_test.js
+++ b/packages/neutrino/test/api_test.js
@@ -1,5 +1,6 @@
 import test from 'ava';
 import { Neutrino } from '../src';
+import { join } from 'path';
 
 test('initializes with no arguments', t => {
   t.notThrows(() => Neutrino());
@@ -18,6 +19,78 @@ test('initialization stores options', t => {
   t.is(api.options.gamma, options.gamma);
 });
 
+test('options.root', t => {
+  const api = Neutrino();
+
+  t.is(api.options.root, process.cwd());
+  api.options.root = './alpha';
+  t.is(api.options.root, join(process.cwd(), 'alpha'));
+  api.options.root = '/alpha';
+  t.is(api.options.root, '/alpha');
+});
+
+test('options.source', t => {
+  const api = Neutrino();
+
+  t.is(api.options.source, join(process.cwd(), 'src'));
+  api.options.source = './alpha';
+  t.is(api.options.source, join(process.cwd(), 'alpha'));
+  api.options.root = '/beta';
+  t.is(api.options.source, join('/beta', 'alpha'));
+  api.options.source = '/alpha';
+  t.is(api.options.source, '/alpha');
+});
+
+test('options.output', t => {
+  const api = Neutrino();
+
+  t.is(api.options.output, join(process.cwd(), 'build'));
+  api.options.output = './alpha';
+  t.is(api.options.output, join(process.cwd(), 'alpha'));
+  api.options.root = '/beta';
+  t.is(api.options.output, join('/beta', 'alpha'));
+  api.options.output = '/alpha';
+  t.is(api.options.output, '/alpha');
+});
+
+test('options.tests', t => {
+  const api = Neutrino();
+
+  t.is(api.options.tests, join(process.cwd(), 'test'));
+  api.options.tests = './alpha';
+  t.is(api.options.tests, join(process.cwd(), 'alpha'));
+  api.options.root = '/beta';
+  t.is(api.options.tests, join('/beta', 'alpha'));
+  api.options.tests = '/alpha';
+  t.is(api.options.tests, '/alpha');
+});
+
+test('options.node_modules', t => {
+  const api = Neutrino();
+
+  t.is(api.options.node_modules, join(process.cwd(), 'node_modules'));
+  api.options.node_modules = './alpha';
+  t.is(api.options.node_modules, join(process.cwd(), 'alpha'));
+  api.options.root = '/beta';
+  t.is(api.options.node_modules, join('/beta', 'alpha'));
+  api.options.node_modules = '/alpha';
+  t.is(api.options.node_modules, '/alpha');
+});
+
+test('options.entry', t => {
+  const api = Neutrino();
+
+  t.is(api.options.entry, join(process.cwd(), 'src/index.js'));
+  api.options.entry = './alpha.js';
+  t.is(api.options.entry, join(process.cwd(), 'src/alpha.js'));
+  api.options.source = 'beta';
+  t.is(api.options.entry, join(process.cwd(), 'beta/alpha.js'));
+  api.options.root = '/gamma';
+  t.is(api.options.entry, join('/gamma', 'beta/alpha.js'));
+  api.options.entry = '/alpha.js';
+  t.is(api.options.entry, '/alpha.js');
+});
+
 test('creates an instance of webpack-chain', t => {
   const api = Neutrino();