Use jansi's Windows support for terminal colors.

pom.xml

@@ -69,6 +69,7 @@
       <type>jar</type>
       <scope>compile</scope>
     </dependency>
+    <!-- jline and jansi versions must be kept in sync -->
     <dependency>
       <groupId>jline</groupId>
       <artifactId>jline</artifactId>
@@ -76,6 +77,13 @@
       <type>jar</type>
       <scope>compile</scope>
     </dependency>
+    <dependency>
+      <groupId>org.fusesource.jansi</groupId>
+      <artifactId>jansi</artifactId>
+      <version>1.8</version>
+      <type>jar</type>
+      <scope>compile</scope>
+    </dependency>
     <dependency>
       <groupId>org.xerial</groupId>
       <artifactId>sqlite-jdbc</artifactId>

src/main/java/jline/AnsiWindowsTerminal.java

@@ -64,6 +64,7 @@ public class AnsiWindowsTerminal
     }
 
     private static boolean detectAnsiSupport() {
+        AnsiConsole.systemInstall(); // CraftBukkit - install Windows JNI library
         OutputStream out = AnsiConsole.wrapOutputStream(new ByteArrayOutputStream());
         try {
             out.close();