Issue label creation is available.

src/main/scala/app/LabelsController.scala

@@ -1,7 +1,29 @@
 package app
 
+import jp.sf.amateras.scalatra.forms._
+import service._
+import util.WritableRepositoryAuthenticator
+
 class LabelsController extends LabelsControllerBase
+  with LabelsService with RepositoryService with AccountService with WritableRepositoryAuthenticator
 
 trait LabelsControllerBase extends ControllerBase {
+  self: LabelsService with WritableRepositoryAuthenticator =>
+
+  case class LabelForm(labelName: String, color: String)
+
+  val labelForm = mapping(
+    "labelName" -> trim(label("Label name", text(required, maxlength(100)))),
+    "color"     -> trim(label("Color",      text(required, maxlength(7))))
+  )(LabelForm.apply)
+
+  post("/:owner/:repository/issues/label/new", labelForm)(writableRepository { form =>
+    val owner      = params("owner")
+    val repository = params("repository")
+
+    createLabel(owner, repository, form.labelName, form.color.substring(1))
+
+    redirect("/%s/%s/issues".format(owner, repository))
+  })
 
 }