Is this as simple as turning back on this line? https://github.com/mockito/mockito/blob/b0393eafeeb81b6c75e40a82b81672543777ca9a/gradle/javadoc.gradle#L55
 Probably but I need to check before. The file may have been removed. And the javadoc tool is _picky_ especially in old version of the JDK.
 Actually we should revert this commit 3a057b3eff2be528a1fed41852a990cff87a72c1, when JDK7 was the only option on travis
 It seems the javadoc tool of openjdk6 generates a different HTML than Sun JDK 6. Thus the stylesheet is not working properly.

<img width="748" alt="screen shot 2016-08-24 at 11 56 56" src="https://cloud.githubusercontent.com/assets/803621/17926642/35b9d2cc-69f2-11e6-9614-61648cafeb18.png">

Yet again an issue with OpenJDK6...

Fix again javadoc stylesheet
Previously we had a nice javadoc stylesheet. That worked well with JDK6.
Then we used travis that was only allowing OracleJDK7, that came with a better javadoc stylesheet so we dropped ours.

Now since the release of mockito 2.x is using openjdk6, we should reintroduce a better stylesheet.

Current state ❌ 
http://site.mockito.org/mockito/docs/2.0.100-beta/org/mockito/Mockito.html
<img width="712" alt="screen shot 2016-08-13 at 19 41 59" src="https://cloud.githubusercontent.com/assets/803621/17644719/cecc5ec4-618e-11e6-912e-9b0dcd7e94db.png">

Previous ✅ 
http://site.mockito.org/mockito/docs/2.0.0-beta/org/mockito/Mockito.html
<img width="877" alt="screen shot 2016-08-13 at 19 45 32" src="https://cloud.githubusercontent.com/assets/803621/17644722/d71bcd08-618e-11e6-831a-a01c47e8cc61.png">

gradle/javadoc.gradle
gradle/javadoc.gradle src/javadoc/stylesheet.css
diff --git a/gradle/javadoc.gradle b/gradle/javadoc.gradle
index 51f4cd4e1d..921589844d 100644
--- a/gradle/javadoc.gradle
+++ b/gradle/javadoc.gradle
@@ -52,7 +52,7 @@ task mockitoJavadoc(type: Javadoc) {
           }
         </script>
     """.replaceAll(/\r|\n/, ""))
-//    options.stylesheetFile file("src/javadoc/stylesheet.css")
+    options.stylesheetFile file("src/javadoc/stylesheet.css")
 //    options.addStringOption('top', 'some html')
     if (JavaVersion.current().isJava8Compatible()) {
         options.addStringOption('Xdoclint:none', '-quiet')
diff --git a/src/javadoc/stylesheet.css b/src/javadoc/stylesheet.css
new file mode 100644
index 0000000000..f17de4f9fa
--- /dev/null
+++ b/src/javadoc/stylesheet.css
@@ -0,0 +1,63 @@
+/* Javadoc style sheet */
+
+/* Define colors, fonts and other style attributes here to override the defaults */
+
+/* Page background color */
+body { background-color: #FFFFFF; color:#333; font-size: 100%; }
+
+body { font-size: 0.875em; line-height: 1.286em; font-family:   "Helvetica", "Arial", sans-serif; }
+
+code { color: #777; line-height: 1.286em; font-family: "Consolas", "Lucida Console", "Droid Sans Mono", "Andale Mono", "Monaco", "Lucida Sans Typewriter"; }
+
+pre { color: #555; line-height: 1.0em; font-family: "Consolas", "Lucida Console", "Droid Sans Mono", "Andale Mono", "Monaco", "Lucida Sans Typewriter"; }
+
+
+a { text-decoration: none; color: #16569A; /* also try #2E85ED, #0033FF, #6C93C6, #1D7BBE, #1D8DD2 */ }
+a:hover, a:hover code { color: #EEEEEE; background-color: #16569A; }
+a:visited, a:visited code { color: #CC3300; }
+a:visited:hover, a:visited:hover code { color: #fff; background-color: #CC3300; }
+
+a.meaningful_link { text-decoration: none; color: #333333; background-color: #EAF9DD; border-bottom: 1px dashed #006400 }
+a.meaningful_link code { text-decoration: none; color: #777; border-bottom: 1px dashed #006400 }
+a.meaningful_link:hover, a.meaningful_link:hover code { background-color: #E0F9C9; }
+a.meaningful_link:visited, a.meaningful_link:visited code { color: #4B0012; }
+a.meaningful_link:visited:hover, a.meaningful_link:visited:hover code{ color: #4B0012; background-color: #ADE78B; }
+
+table[border="1"] { border: 1px solid #ddd; }
+table[border="1"] td, table[border="1"] th { border: 1px solid #ddd; }
+table[cellpadding="3"] td { padding: 0.5em; }
+
+font[size="-1"] { font-size: 0.85em; line-height: 1.5em; }
+font[size="-2"] { font-size: 0.8em; }
+font[size="+2"] { font-size: 1.4em; line-height: 1.3em; padding: 0.4em 0; }
+
+/* Headings */
+h1 { font-size: 1.5em; line-height: 1.286em;}
+
+/* Table colors */
+.TableHeadingColor     { background: #ccc; color:#444; } /* Dark mauve */
+.TableSubHeadingColor  { background: #ddd; color:#444; } /* Light mauve */
+.TableRowColor         { background: #FFFFFF; color:#666; font-size: 0.95em; } /* White */
+.TableRowColor code    { color:#000; } /* White */
+
+/* Font used in left-hand frame lists */
+.FrameTitleFont   { font-size: 100%; }
+.FrameHeadingFont { font-size:  90%; }
+.FrameItemFont { font-size:  0.9em; line-height: 1.3em;
+}
+/* Java Interfaces */
+.FrameItemFont a i {
+    font-style: normal; color: #666;
+}
+.FrameItemFont a:hover i {
+    font-style: normal; color: #fff; background-color: #666;
+}
+
+/* Navigation bar fonts and colors */
+.NavBarCell1    { background-color:#E0E6DF; } /* Light mauve */
+.NavBarCell1Rev { background-color:#16569A; color:#FFFFFF} /* Dark Blue */
+.NavBarFont1    { }
+.NavBarFont1Rev { color:#FFFFFF; }
+
+.NavBarCell2    { background-color:#FFFFFF; color:#000000}
+.NavBarCell3    { background-color:#FFFFFF; color:#000000}
\ No newline at end of file
