WoWInterface - desperately searching a background in the standard unitframes

Here's another picture and some lines of my code...

http://img819.imageshack.us/img819/8024/bgproblem.png

Code:

local function whoa_targetFrame()

   TargetFrame.nameBackground:Hide() -- that was the upper background

--  UNKNOWNBACKGROUNDFRAME:Hide()

    TargetFrame.deadText:ClearAllPoints()

    TargetFrame.deadText:SetPoint("CENTER", TargetFrameHealthBar, "CENTER", 0, 0)

    TargetFrameTextureFrameName:ClearAllPoints()

    TargetFrameTextureFrameName:SetPoint("BOTTOMRIGHT", TargetFrame, "TOP", 0, -20)

    TargetFrameHealthBar:ClearAllPoints()

    TargetFrameHealthBar:SetPoint("TOPLEFT", 5, -24)

    TargetFrameHealthBar:SetHeight(18)

    TargetFrameHealthBar.background = TargetFrameHealthBar:CreateTexture("TargetFrameHealthBarBackground", "BACKGROUND")

    TargetFrameHealthBar.background:SetTexture(0, 0, 0, 0.5)

    TargetFrameHealthBar.background:SetAllPoints()

    TargetFrameTextureFrameHealthBarText:ClearAllPoints()

    TargetFrameTextureFrameHealthBarText:SetPoint("CENTER", TargetFrameHealthBar, "CENTER", 0, 0)

    TargetFrameManaBar:ClearAllPoints()

    TargetFrameManaBar:SetPoint("TOPLEFT", 5, -45)

    TargetFrameManaBar:SetHeight(17)

    TargetFrameManaBar.background = TargetFrameManaBar:CreateTexture("TargetFrameManaBarBackground", "BACKGROUND")

    TargetFrameManaBar.background:SetTexture(0, 0, 0, 0.5)

    TargetFrameManaBar.background:SetAllPoints()

    TargetFrameTextureFrameManaBarText:ClearAllPoints()

    TargetFrameTextureFrameManaBarText:SetPoint("CENTER", TargetFrameManaBar, "CENTER", 0, 0)

    TargetFrame.threatNumericIndicator:SetPoint("BOTTOM", PlayerFrame, "TOP", 75, -22)

end

* new code for mop version

Just for the testing i hide the targetgraphic.

Code:

TargetFrameTextureFrame:Hide()