How to add coloring to PDF reports in rmarkdown?

Question

How to add background colors to specific section of the text while creating PDF reports using rmarkdown. Something like below

i tried something like this but it is working in latex but not in rmarkdown

\titleformat{\section}{\sffamily\Large\bfseries\rlap{\color{DarkGreen!90}\rule[-0.5ex]{\linewidth}{3ex}\vspace{-3ex}}\sffamily\Large\color{white}}{\thesection}{1em}{}

this is how it looks in latex

this is in rmarkdown

---
title: "Untitled"
output: pdf_document
header-includes:
- \usepackage{amsfonts,amssymb,amsmath}
- \usepackage[table, svgnames]{xcolor}
- \usepackage{titlesec}
- \usepackage{sectsty}
- \usepackage{xcolor, soul}  
- \sectionfont{\color{red}}
- \subsectionfont{\color{green}}
- \subsubsectionfont{\color{blue}}
- \titleformat{\section}{\sffamily\Large\bfseries\rlap{\color{DarkGreen!90}\rule[-0.5ex]{\linewidth}{3ex}\vspace{-3ex}}\sffamily\Large\color{white}}{\thesection}{1em}{}

---
\section{Highlights}
# Section

Take a look at https://stackoverflow.com/questions/41030477/changing-chunk-background-color-in-rmarkdown — Angelo Canepa, Mar 20 '21 at 09:26
This might be helpful: https://stackoverflow.com/a/66323425/13249862 — bttomio, Mar 20 '21 at 12:45
Can you make a [mre] that shows is which documentclass etc you are using? — samcarter_is_at_topanswers.xyz, Mar 26 '21 at 14:56
Can you post the markdown code in a code block instead of an image? — samcarter_is_at_topanswers.xyz, Mar 29 '21 at 11:04
Probably markdown will automatically load the xcolor package with different options and thus causing the error message — samcarter_is_at_topanswers.xyz, Mar 29 '21 at 11:04
@samcarter_is_at_topanswers.xyz i'm not sure about that even i tried individually making section to highlight in background it didn't work. — user15437862, Mar 29 '21 at 11:09
@samcarter_is_at_topanswers.xyz can you please check i have edited — user15437862, Mar 29 '21 at 11:10

score 0 · Accepted Answer · answered Mar 29 '21 at 11:22

Two problems:

rmarkdown already loads xcolor without paying attention to the options you need. As a workaround you could trick markdown by passing the necessary options to all packages
sectsty will destroy all changes you do via titlesec. Don't load them both

---
title: "Untitled"
output: 
  pdf_document:
    keep_tex: true
classoption: svgnames
header-includes:
- \usepackage{amsfonts,amssymb,amsmath}
- \usepackage{titlesec}
- \usepackage{soul}  
- \titleformat{\section}{\sffamily\Large\bfseries\rlap{\color{DarkGreen!90}\rule[-1.5ex]{\linewidth}{3ex}\vspace{-3.5ex}}\sffamily\Large\color{white}}{\thesection}{1em}{}

---
\section{Highlights}
# Section

How to add coloring to PDF reports in rmarkdown?

1 Answers1