diff --git a/src/seesaw/color.clj b/src/seesaw/color.clj
index 79d598dd..0e888958 100644
--- a/src/seesaw/color.clj
+++ b/src/seesaw/color.clj
@@ -210,7 +210,7 @@
       (color (resource s))
       (or (color-names (.toLowerCase (name s))) (decode (name s)))))
   ([s a] (apply color (assoc (get-rgba (color s)) 3 a)))
-  ([^Integer r ^Integer g ^Integer b ^Integer a] (Color. r (or g 0) (or b 0) (or a 255)))
+  ([^Integer r ^Integer g ^Integer b ^Integer a] (Color. r (int (or g 0)) (int (or b 0)) (int (or a 255))))
   ([r g b] (color r g b nil)))
 
 (defn ^Color default-color
diff --git a/src/seesaw/event.clj b/src/seesaw/event.clj
index 0fffad7d..92fdd35f 100644
--- a/src/seesaw/event.clj
+++ b/src/seesaw/event.clj
@@ -241,7 +241,7 @@
         (for [{:keys [class] :as group} (vals event-groups)]
           [class group])))
 
-(defn- get-listener-class [m]
+(defn- get-listener-class [^java.lang.reflect.Method m]
   (let [[arg] (.getParameterTypes m)]
     (if (and arg (.startsWith (.getName m) "add"))
       arg)))
@@ -512,7 +512,7 @@
   "List to propertyChange events on a target for a particular named property.
   List (listen), returns a function that, when called removes the installed
   listener."
-  [target property event-fn]
+  [^java.awt.Component target property event-fn]
   (let [listener (reify java.beans.PropertyChangeListener
                    (propertyChange [this e] (event-fn e)))]
     (.addPropertyChangeListener target property listener)
@@ -536,7 +536,7 @@
     (seesaw.dev/show-events)
   "
   [v]
-  (let [base (->> (.getMethods (if (class? v) v (class v)))
+  (let [base (->> (.getMethods (if (class? v) ^java.lang.Class v (class v)))
                (map get-listener-class)
                (filter identity)
                (map event-groups-by-listener-class)
diff --git a/src/seesaw/graphics.clj b/src/seesaw/graphics.clj
index 75e6bd6d..cc779351 100644
--- a/src/seesaw/graphics.clj
+++ b/src/seesaw/graphics.clj
@@ -188,7 +188,7 @@
 ;*******************************************************************************
 ; Gradients
 
-(defn- to-point2d-f [[x y]] (java.awt.geom.Point2D$Float. (float x) (float y)))
+(defn- ^java.awt.geom.Point2D$Float to-point2d-f [[x y]] (java.awt.geom.Point2D$Float. (float x) (float y)))
 (def ^{:private true} default-start [0 0])
 (def ^{:private true} default-end [1 0])
 (def ^{:private true} default-fractions [0.0 1.0])
@@ -274,8 +274,8 @@
       (float radius)
       (to-point2d-f (or focus center))
       (float-array fractions)
-      (into-array java.awt.Color (map to-color colors))
-      (cycle-map cycle)))
+      ^{:tag "[Ljava.awt.Color;"} (into-array java.awt.Color (map to-color colors))
+      ^java.awt.MultipleGradientPaint$CycleMethod (cycle-map cycle)))
 
 ;*******************************************************************************
 ; Strokes
diff --git a/src/seesaw/layout.clj b/src/seesaw/layout.clj
index 0d0e3445..b51a491a 100644
--- a/src/seesaw/layout.clj
+++ b/src/seesaw/layout.clj
@@ -37,7 +37,7 @@
   ([^java.awt.Container c w constraint] 
     (let [w* (if w (make-widget* w))]
       (check-args (not (nil? w*)) (str "Can't add nil widget. Original was (" w ")"))
-      (.add c w* constraint)
+      (.add c ^java.awt.Component w* constraint)
       w*)))
 
 (defn add-widgets
diff --git a/src/seesaw/util.clj b/src/seesaw/util.clj
index e5de71d6..f8a93a1d 100644
--- a/src/seesaw/util.clj
+++ b/src/seesaw/util.clj
@@ -194,7 +194,7 @@
   [v]
   (cond 
     (resource-key? v) (to-mnemonic-keycode (resource v))
-    (string? v)       (to-mnemonic-keycode (.charAt v 0))
+    (string? v)       (to-mnemonic-keycode (.charAt ^String v 0))
     (char? v)         (int (Character/toUpperCase ^Character v))
     :else             (int v)))