diff --git a/slides/sections/0.md b/slides/sections/0.md
index 2a4e652..4faa697 100644
--- a/slides/sections/0.md
+++ b/slides/sections/0.md
@@ -86,6 +86,9 @@ header-includes: |
     \oldIncludegraphics[#1]{#2}
   }
 
+  % multirow tables
+  \usepackage{multirow}
+  \usepackage{booktabs}
 
   %% math macros
 
@@ -118,6 +121,16 @@ header-includes: |
   \DeclareMathOperator{\ob}{%
     ^{\text{obs}}
   }
+
+  % red colored
+  \newcommand{\red}[1]{%
+  \textcolor{red}{#1}
+  }
+
+  % green colored
+  \newcommand{\gre}[1]{%
+  \textcolor{green}{#1}
+  }
   ```
 
 csl: ../notes/docs/bibliography.csl