preamble1_color.tex

\usepackage{tcolorbox}
\usepackage{tikz}
\usepackage{graphicx}
\usetikzlibrary{calc}
\tcbuselibrary{most}

% Define the colours to match the CSS above
\definecolor{background}{HTML}{F8F9F9}
\definecolor{border}{HTML}{006400}
\definecolor{titlecol}{HTML}{006400}
\definecolor{titlecolsol}{HTML}{DCDCDC}

% Create our custom box
\newtcolorbox{customBlock}{
  colback = background,
  colframe = border,
  boxsep=5pt,
  arc=3pt}

\newtcolorbox{excerciseblock}[2]{title=#1}

\newtcolorbox[auto counter,number within=section,
number freestyle={\noexpand\thesection.\noexpand\arabic{\tcbcounter}},
]{exercisebox}[2][]{title=Lab~#2~ Exercise \thetcbcounter #1}

\definecolor{block-green}{cmyk}{0.80, 0.13, 0.14, 0.04}

%\newtcolorbox[auto counter,number within=section,
%number freestyle={\noexpand\thesection.\noexpand\arabic{\tcbcounter}},
%]{solutionbox}[3][]{colbacktitle=#2,title=Lab~#3~ Solution exercise \thetcbcounter #1}

\newtcolorbox[colbacktitle=block-green,auto counter,number within=section,
number freestyle={\noexpand\thesection.\noexpand\arabic{\tcbcounter}},
]{solutionbox}[2][]{title=Lab~#2~ Solution exercise \thetcbcounter #1}


% Create our custom box
\newtcolorbox{ti}{
	colback = background,
	colframe = border,
	boxsep=0pt,
	%bottom=0pt,
	%bottomrule=pt,
	after skip=0pt,
	arc=0pt}

\newtcolorbox{body}{
	colback = background,
	colframe = border,
	boxsep=0pt,
	%top=0pt,
	%toprule=0pt,
	before skip=0pt,
	arc=0pt}