Gave the health bar a border, made it a little more high res.

app/lib/surface/CocoSprite.coffee

@@ -328,7 +328,7 @@ module.exports = CocoSprite = class CocoSprite extends CocoClass
       return if @thang.health is @lastHealth
       @lastHealth = @thang.health
       healthPct = Math.max(@thang.health / @thang.maxHealth, 0)
-      bar.scaleX = healthPct
+      bar.scaleX = healthPct / bar.baseScale
       healthOffset = @getOffset 'aboveHead'
       [bar.x, bar.y] = [healthOffset.x - bar.width / 2, healthOffset.y]
 
@@ -357,7 +357,7 @@ module.exports = CocoSprite = class CocoSprite extends CocoClass
     bar = @healthBar = createProgressBar(healthColor, healthOffset.y)
     bar.x = healthOffset.x - bar.width / 2
     bar.name = 'health bar'
-    bar.cache 0, -bar.height / 2, bar.width, bar.height
+    bar.cache 0, -bar.height * bar.baseScale / 2, bar.width * bar.baseScale, bar.height * bar.baseScale
     @displayObject.addChild bar
 
   getActionProp: (prop, subProp, def=null) ->

app/lib/surface/sprite_utils.coffee

@@ -1,16 +1,28 @@
 PROG_BAR_WIDTH = 20
 PROG_BAR_HEIGHT = 2
+PROG_BAR_SCALE = 2.5
+EDGE_SIZE = 0.3
 
 module.exports.createProgressBar = createProgressBar = (color, y, width=PROG_BAR_WIDTH, height=PROG_BAR_HEIGHT) ->
   g = new createjs.Graphics()
   g.setStrokeStyle(1)
+
+  sWidth = width * PROG_BAR_SCALE
+  sHeight = height * PROG_BAR_SCALE
+  sEdge = EDGE_SIZE * PROG_BAR_SCALE
+
+  g.beginFill(createjs.Graphics.getRGB(0, 0, 0))
+  g.drawRect(0, -sHeight/2, sWidth, sHeight, sHeight)
   g.beginFill(createjs.Graphics.getRGB(color...))
-  g.drawRoundRect(0, -1, width, height, height)
+  g.drawRoundRect(sEdge, sEdge - sHeight/2, sWidth-sEdge*2, sHeight-sEdge*2, sHeight-sEdge*2)
 
   s = new createjs.Shape(g)
   s.x = -width / 2
   s.y = y
   s.z = 100
+  s.baseScale = PROG_BAR_SCALE
+  s.scaleX = 1 / PROG_BAR_SCALE
+  s.scaleY = 1 / PROG_BAR_SCALE
   s.width = width
   s.height = height
   return s