earth-optimization-protocol/callout-bw.tex at develop · wishonia/earth-optimization-protocol · GitHub

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% Black and white callout styling for Quarto PDFs
% Overrides Quarto's colored callout styles with grayscale
% Uses \AtBeginDocument to ensure colors are applied AFTER Quarto's
% filter-injected \definecolor commands in the preamble.
% Must redefine BOTH base colors (used for colbacktitle) AND
% -frame colors (used for colframe) since Quarto 1.8+ uses inline
% tcolorbox options rather than named styles.

\makeatletter
\AtBeginDocument{
  \@ifpackageloaded{tcolorbox}{%
    % Override base callout colors (used for colbacktitle with !10!white)
    \definecolor{quarto-callout-color}{HTML}{707070}
    \definecolor{quarto-callout-note-color}{HTML}{5a5a5a}
    \definecolor{quarto-callout-important-color}{HTML}{4a4a4a}
    \definecolor{quarto-callout-warning-color}{HTML}{5a5a5a}
    \definecolor{quarto-callout-tip-color}{HTML}{6a6a6a}
    \definecolor{quarto-callout-caution-color}{HTML}{4a4a4a}

    % Override frame colors (used for colframe - the border)
    \definecolor{quarto-callout-color-frame}{HTML}{707070}
    \definecolor{quarto-callout-note-color-frame}{HTML}{5a5a5a}
    \definecolor{quarto-callout-important-color-frame}{HTML}{4a4a4a}
    \definecolor{quarto-callout-warning-color-frame}{HTML}{5a5a5a}
    \definecolor{quarto-callout-tip-color-frame}{HTML}{6a6a6a}
    \definecolor{quarto-callout-caution-color-frame}{HTML}{4a4a4a}
  }{}% Do nothing if tcolorbox not loaded
}
\makeatother