diff --git a/Localization/enUS.lua b/Localization/enUS.lua
index 03c9a58..b1cbf7c 100644
--- a/Localization/enUS.lua
+++ b/Localization/enUS.lua
@@ -174,6 +174,8 @@ L["Use Class Colors"] = true
 L["Use standard class colors for the background color of threat bars"] = true
 L["Pet Bar Color"] = true
 L["The background color for pets"] = true
+L["Use !ClassColors"] = true
+L["Use !ClassColors addon for class colors for the background color of threat bars"] = true
 L["Fade/MI Bar Color"] = true
 L["The background color for players under the effects of Fade and Mirror Image (they will be at negative 4 million threat)"] = true
 L["Bar BG Color"] = true
diff --git a/Omen.lua b/Omen.lua
index bda9230..601ef04 100644
--- a/Omen.lua
+++ b/Omen.lua
@@ -149,6 +149,7 @@ local defaults = {
 			AggroBarColor = {r = 1, g = 0, b = 0, a = 1,},
 			PetBarColor = {r = 0.77, g = 0, b = 1, a = 1},
 			FadeBarColor = {r = 0.5, g = 0.5, b = 0.5, a = 1},
+			UseCustomClassColors = true,
 		},
 		ShowWith = {
 			UseShowWith = true,
@@ -475,10 +476,17 @@ function Omen:PLAYER_LOGIN()
 	self:UpdateBackdrop()
 	self:UpdateTitleBar()
 	self:UpdateGrips()
+	self:UpdateRaidClassColors()
 	self:ClearAll()
 	self:UnregisterEvent("PLAYER_LOGIN")
 	if not db.Shown then self.Anchor:Hide() end -- Auto-show/hide will override this later if enabled
 
+	-- Optional !ClassColors addon support
+	if CUSTOM_CLASS_COLORS then
+		CUSTOM_CLASS_COLORS:RegisterCallback("UpdateBars", self)
+	end
+
+	-- LDB launcher
 	if LDB then
 		OmenLauncher = LDB:NewDataObject("Omen", {
 			type = "launcher",
@@ -848,6 +856,15 @@ function Omen:ToggleFocus()
 	Omen:UpdateBars()
 end
 
+function Omen:UpdateRaidClassColors()
+	if CUSTOM_CLASS_COLORS and db.Bar.UseCustomClassColors then
+		RAID_CLASS_COLORS = CUSTOM_CLASS_COLORS
+	else
+		RAID_CLASS_COLORS = _G.RAID_CLASS_COLORS
+	end
+	Omen:UpdateBars()
+end
+
 
 -----------------------------------------------------------------------------
 -- Omen warnings
@@ -2610,6 +2627,17 @@ local options = {
 					end,
 					disabled = function() return not db.Bar.UseClassColors end,
 				},
+				UseCustomClassColors = {
+					type = "toggle",
+					order = 23,
+					name = L["Use !ClassColors"],
+					desc = L["Use !ClassColors addon for class colors for the background color of threat bars"],
+					set = function(info, v)
+						db.Bar.UseCustomClassColors = v
+						Omen:UpdateRaidClassColors()
+					end,
+					disabled = function() return not db.Bar.UseClassColors or not CUSTOM_CLASS_COLORS end,
+				},
 				FadeBarColor = {
 					type = "color",
 					order = 26,
diff --git a/Omen.toc b/Omen.toc
index b8b9212..06eb115 100644
--- a/Omen.toc
+++ b/Omen.toc
@@ -8,7 +8,7 @@
 ## Notes-zhTW: 一個輕量級、有彈性、可監視多個目標的仇恨統計插件。
 ## Notes-koKR: 다중-대상에 대한 위협수준 미터기로 보여줍니다.
 ## Author: Xinhuan
-## OptionalDeps: Ace3, LibSharedMedia-3.0, AceGUI-3.0-SharedMediaWidgets, LibSink-2.0, LibDBIcon-1.0
+## OptionalDeps: Ace3, LibSharedMedia-3.0, AceGUI-3.0-SharedMediaWidgets, LibSink-2.0, LibDBIcon-1.0, !ClassColors
 ## X-eMail: xinhuan @ gmail DOT com
 ## X-Donate: PayPal:xinhuan @ gmail DOT com
 ## X-Category: Combat