frame.overlay = frame:CreateTexture(nil, "ARTWORK", nil, 1);
frame.overlay:SetPoint("TOPLEFT", frame.background, "TOPLEFT");
frame.overlay:SetPoint("BOTTOMRIGHT", frame.background, "BOTTOMRIGHT");
frame.overlay = frame:CreateTexture(nil, "ARTWORK", nil, 1);
frame.overlay:SetPoint("TOPLEFT", frame.background, "TOPLEFT");
frame.overlay:SetPoint("BOTTOMRIGHT", frame.background, "BOTTOMRIGHT");