diff --git a/HealBotBlue.toc b/HealBotBlue.toc
index 53c95ec..b97c33e 100644
--- a/HealBotBlue.toc
+++ b/HealBotBlue.toc
@@ -1,6 +1,6 @@
 ## Interface: 11200
 ## Title: HealBotBlue
-## Version: 1.6.3
+## Version: 1.6.4
 ## Author: Bluewhale
 ## Notes: Adds panel with skinable bars for healing and decursive
 ## SavedVariablesPerCharacter:  HealBot_Config
diff --git a/HealBot_Action.xml b/HealBot_Action.xml
index 9a82842..d49bd2c 100644
--- a/HealBot_Action.xml
+++ b/HealBot_Action.xml
@@ -18,6 +18,20 @@
       <OnClick>HealBot_Action_HealUnit_OnClick(this,arg1);</OnClick>
     </Scripts>
     <Frames>
+      <StatusBar name="$parentBar2" inherits="HealBot_StatusBar">
+        <Anchors>
+          <Anchor point="TOPLEFT" relativePoint="TOPLEFT">
+            <Offset>
+              <AbsDimension x="0" y="0"/>
+            </Offset>
+          </Anchor>
+          <Anchor point="TOPRIGHT" relativePoint="TOPRIGHT">
+            <Offset>
+              <AbsDimension x="0" y="0"/>
+            </Offset>
+          </Anchor>
+        </Anchors>
+      </StatusBar>
       <StatusBar name="$parentBar" inherits="HealBot_StatusBar">
         <Anchors>
           <Anchor point="TOPLEFT" relativePoint="TOPLEFT">
@@ -116,20 +130,6 @@
           </Layer>
         </Layers>
       </StatusBar>
-      <StatusBar name="$parentBar2" inherits="HealBot_StatusBar">
-        <Anchors>
-          <Anchor point="TOPLEFT" relativePoint="TOPLEFT">
-            <Offset>
-              <AbsDimension x="0" y="0"/>
-            </Offset>
-          </Anchor>
-          <Anchor point="TOPRIGHT" relativePoint="TOPRIGHT">
-            <Offset>
-              <AbsDimension x="0" y="0"/>
-            </Offset>
-          </Anchor>
-        </Anchors>
-      </StatusBar>
       <StatusBar name="$parentBar3" inherits="HealBot_StatusBar" hidden="true">
         <Anchors>
           <Anchor point="TOPLEFT" relativeTo="$parentBar" relativePoint="BOTTOMLEFT">
diff --git a/HealBot_Controller_Aura.lua b/HealBot_Controller_Aura.lua
index 7b85427..60e79d6 100644
--- a/HealBot_Controller_Aura.lua
+++ b/HealBot_Controller_Aura.lua
@@ -165,6 +165,7 @@ function HealBot_OnEvent_UnitAura(this, unit)
         end
         local iconCount = 0
         local i = 1;
+        HealBot_UnitDebuff[unit] = nil;
         while true do
             local debuff, tmp, debuff_type = UnitDebuff(unit, i, 1)
             if debuff then
@@ -172,7 +173,7 @@ function HealBot_OnEvent_UnitAura(this, unit)
                     iconCount = iconCount + 1
                     HealBot_UnitIcons[unit][iconCount] = debuff
                 end
-                if HealBot_CDCInc[UnitClass(unit)] == 1 and HealBot_DebuffWatch[debuff_type] then
+                if HealBot_CDCInc[UnitClass(unit)] == 1 and debuff_type and HealBot_DebuffWatch[debuff_type] then
                     HealBot_UnitDebuff[unit] = debuff_type
                     DebuffType = debuff_type;
                     if HealBot_DebuffPriority[debuff_type] then
@@ -181,7 +182,6 @@ function HealBot_OnEvent_UnitAura(this, unit)
                 end
                 i = i + 1;
             else
-                if i == 1 then HealBot_UnitDebuff[unit] = nil; end
                 break
             end 
         end
diff --git a/HealBot_View_Layout.lua b/HealBot_View_Layout.lua
index 2af7eef..fff26d8 100644
--- a/HealBot_View_Layout.lua
+++ b/HealBot_View_Layout.lua
@@ -27,24 +27,19 @@ end
 
 function HealBot_HealthColor(unit, hlth, maxhlth)
     if HealBot_UnitDebuff[unit] then
-        local debuff, tmp, debuff_type = UnitDebuff(unit, 1, 1)
-        if not debuff then
-            HealBot_UnitDebuff[unit] = nil;
-            HealBot_UnitDebuff[unit .. "_debuff_texture"] = nil
-        else
-            local dr = HealBot_Config.CDCBarColour[debuff_type].R
-            local dg = HealBot_Config.CDCBarColour[debuff_type].G
-            local db = HealBot_Config.CDCBarColour[debuff_type].B
-            if HealBot_Config.btexture[HealBot_Config.Current_Skin] == 10 then
-                dr = dr * 4
-                dg = dg * 4
-                db = db * 4
-                if dr > 1 then dr = 1 end
-                if dg > 1 then dg = 1 end
-                if db > 1 then db = 1 end
-            end
-            return dr, dg, db, HealBot_Config.Barcola[HealBot_Config.Current_Skin];
+        local debuff_type = HealBot_UnitDebuff[unit]
+        local dr = HealBot_Config.CDCBarColour[debuff_type].R
+        local dg = HealBot_Config.CDCBarColour[debuff_type].G
+        local db = HealBot_Config.CDCBarColour[debuff_type].B
+        if HealBot_Config.btexture[HealBot_Config.Current_Skin] == 10 then
+            dr = dr * 4
+            dg = dg * 4
+            db = db * 4
+            if dr > 1 then dr = 1 end
+            if dg > 1 then dg = 1 end
+            if db > 1 then db = 1 end
         end
+        return dr, dg, db, HealBot_Config.Barcola[HealBot_Config.Current_Skin];
     end
     
     local text = UnitName(unit);
diff --git a/README.md b/README.md
index be92b99..9fd55d4 100644
--- a/README.md
+++ b/README.md
@@ -49,6 +49,11 @@ Default installation path: `C:\Program Files\World of Warcraft\Interface\AddOns\
 
 ### Change Log
 
+**v1.6.4**
+* **Bug Fix - UI Opacity** - Fixed a rendering layering bug where incoming heals drew on top of actual health, causing the semi-transparent incoming heal bar to wash out the solid health bar.
+* **Bug Fix - CDC Colors** - Fixed health bar debuff coloring (CDC) by stopping `HealBot_HealthColor` from incorrectly querying debuffs directly, relying instead on cached debuff types.
+
+
 **v1.6.3** 
 * **Hotfix string splitter** - added  falback for string splitter if the the string is empty or nil.
 * **UI Update - Icon Limit** - Increased maximum tracked buffs/debuffs per unit from 5 to 10.