Problem with Noun text in Beamer titles

[Bruce Momjian]

I am using LyX 2.3.4.2 on Ubuntu, but this bug goes back many years.

I have found that if I am using the Beamer document class, and a
non-default/non-blue Latex text color for PDF output, if I add text to
an existing title by first enabling Noun mode, and then typing, the text
looks fine in LyX.  However, when it is rendered by Latex to PDF using
my non-blue default text title color, the Noun text outputs as blue. 
This is probably because the LyX file forces blue for such text:

	\begin_layout Frame
	\begin_inset Argument 4
	status open
	
	\begin_layout Plain Layout
	Abc
	\size largest
	\noun on
-->	\color blue
	pqr
	\size default
	\noun default
	\color inherit
	def
	\noun on
	mno
	\noun default
	ghi jkl
	\end_layout
	
	\end_inset

If I instead add text in LyX in non-noun mode, and then highlight the
text and choose Noun mode, the existing text is converted to Noun format
but not marked as blue.  I think the blue marking above is a bug.

This problem has caused me to have to re-check all my Latex output to
make sure no noun title text is blue.

-- 
  Bruce Momjian  <bruce at momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  Indecision is a decision.  Inaction is an action.  Mark Batterson