Problem with Message styling

Consider the following:

printMessage[cellexpr_]:=CellPrint@Cell[cellexpr,"Message",
                         CellLabel->"(slave Kernel)",ShowCellLabel->True,
                         CellFrameMargins->0,Background->LightBrown,
                         CellLabelAutoDelete->False];
printMessage[BoxData[RowBox[{RowBox[{"Sin", "::", "\"argx\""}], ": ",
  "\"\\!\\(Sin\\) called with \\!\\(2\\) arguments; 1 argument is expected.\""}],
  StandardForm]]
Sin[1,1];

-->

(slave Kernel) Sin::argx: Sin called with 2 arguments; 1 argument is expected.
During evaluation of In[1]:= Sin::argx: Sin called with 2 arguments;
1 argument is expected. >>

One can see that the auto-generated Message inherits the style of the previous printed Cell. Why this happens? And how to prevent this?

It seems that one workaround for this bug is to move "Message" to another place in the Cell options:

printMessage[cellexpr_]:=CellPrint@Cell[cellexpr,CellLabel->"(slave Kernel)",
                         "Message", ShowCellLabel->True,
                         CellFrameMargins->0,Background->LightBrown,
                         CellLabelAutoDelete->False];
printMessage[BoxData[RowBox[{RowBox[{"Sin", "::", "\"argx\""}], ": ",
  "\"\\!\\(Sin\\) called with \\!\\(2\\) arguments; 1 argument is expected.\""}],
  StandardForm]]
Sin[1,1];

EDIT

But as the result appearance of the printed Cell is changed:

print := printMessage[
  BoxData[RowBox[{RowBox[{"NIntegrate", "::", "\"slwcon\""}], ": ", 
     "\"Numerical integration converging too slowly; suspect one of \
the following: singularity, value of the integration being 0, \
oscillatory integrand, or insufficient WorkingPrecision. If your \
integrand is oscillatory try using the option Method->Oscillatory in \
NIntegrate.\""}], StandardForm]]

EDIT 2

The above workaround works only during the first fresh session. After saving and reopening of the Notebook the problem appears again.

The only working workaround a this moment is do not use Styles but to specify explicit set of options.