diff --git a/src/bean/frames.cljs b/src/bean/frames.cljs
index 0e4b5b9..6676b32 100644
--- a/src/bean/frames.cljs
+++ b/src/bean/frames.cljs
@@ -37,7 +37,11 @@
     sheet))
 
 (defn add-labels [sheet frame-name addresses dirn]
-  (reduce #(add-label %1 frame-name %2 dirn (util/random-color-hex)) sheet addresses))
+  (reduce #(add-label %1 frame-name %2 dirn
+                      (case dirn
+                        :top (util/random-color-hex (str (first %2) dirn))
+                        :left (util/random-color-hex (str (second %2) dirn))
+                        (util/random-color-hex))) sheet addresses))
 
 (defn remove-labels [sheet frame-name addresses]
   (reduce #(update-in % [:frames frame-name :labels] dissoc %2) sheet addresses))
diff --git a/src/bean/ui/events.cljs b/src/bean/ui/events.cljs
index e6c6422..e7b0e2b 100644
--- a/src/bean/ui/events.cljs
+++ b/src/bean/ui/events.cljs
@@ -279,7 +279,6 @@
 
 (rf/reg-event-fx
  ::renaming-frame
- (undoable)
  (fn edit-frame [{:keys [db]} [_ frame-name]]
    {:db (assoc-in db [:ui :renaming-frame] frame-name)
     :fx [[:dispatch [::select-frame frame-name]]]}))
diff --git a/src/bean/ui/styles.cljs b/src/bean/ui/styles.cljs
index 5b81f43..d4c1bc2 100644
--- a/src/bean/ui/styles.cljs
+++ b/src/bean/ui/styles.cljs
@@ -36,4 +36,4 @@
             :frame-name-padding 3})
 
 (def cell-background-colors
-  [nil 0xcccccc 0xffc9c9 0xb2f2bb 0xa5d8ff 0xffec99])
+  [nil 0xcccccc 0xb2f2bb 0xa5d8ff 0xffec99])
diff --git a/src/bean/util.cljs b/src/bean/util.cljs
index 14d2217..59368d4 100644
--- a/src/bean/util.cljs
+++ b/src/bean/util.cljs
@@ -54,10 +54,17 @@
     (for [c (range start-c (inc end-c))]
       [r c])))
 
-(defn random-color-hex []
-  (+ (bit-shift-left (rand-int 256) 16)
-     (bit-shift-left (rand-int 256) 8)
-     (rand-int 256)))
+(defn random-color-hex
+  ([]
+   (random-color-hex (rand-int 1000000)))
+  ([seed]
+   (let [hash (hash seed)
+         r (mod (bit-shift-right hash 16) 256)
+         g (mod (bit-shift-right hash 8) 256)
+         b (mod hash 256)]
+     (+ (bit-shift-left r 16)
+        (bit-shift-left g 8)
+        b))))
 
 (defn merged-or-self [[r c] sheet]
   (or (get-in sheet [:grid r c :style :merged-with]) [r c]))