[nin]

  local d = self:CreateTexture(nil,"BACKGROUND",nil,-7)
    d:SetTexture("Interface\\AddOns\\rTextures\\raid_debuffglow")
    d:SetAllPoints(self)
    d:SetBlendMode("BLEND")
    d:SetVertexColor(0, 1, 0, 0) -- set alpha to 0 to hide the texture
    self.DebuffHighlight = d
    self.DebuffHighlightAlpha = 1
    self.DebuffHighlightFilter = true

is his current code for debuffhighlight..

Im not sure how your full code looks. but you're creating a frame instead of a texture in your code...try using one of the many examples on the ouf_debuffhighlight page and see if u can get it too work with a texture instead of beautycase.