Vaticana, changing colour of divisiones

[Jakub Pavlík]

Hi,

I've been trying to change colour of divisiones in chant notation.
The Divisio layout object seemed to be an obvious choice, so I tried it
first, to no effect.
Then I inspected the definition of divisiones of gregorian.ly: they seem to
be implemented as breathing signs, but overriding BreathingSign.color has
no effect either.
What is the actual way to do it?

Thanks, Jakub

% M(n)WE ------------------------------
\version "2.24.1"
\include "gregorian.ly"

\score {
  \new VaticanaVoice = "v" {
    % trying to make the divisiones red
    \override Divisio.color = #red
    \override BreathingSign.color = #red

    b \divisioMinima b \divisioMaior b \divisioMaxima b \finalis
  }
}
% ----------------------------------------