diff --git a/docs/awesome_table_in_pdf.Rmd b/docs/awesome_table_in_pdf.Rmd
index 043e8a7..7025dd7 100644
--- a/docs/awesome_table_in_pdf.Rmd
+++ b/docs/awesome_table_in_pdf.Rmd
@@ -99,9 +99,12 @@
   - \usepackage{threeparttablex}
   - \usepackage[normalem]{ulem}
   - \usepackage{makecell}
+  - \usepackage{xcolor}
 ```
 
-Note: `kableExtra` was using `xcolor` for alternative row color before 1.0. However, the recent updates in `fancyvbr` causes a clash in `xcolor` option. Therefore, we removed the `xcolor` dependency in version 1.0 and started to rely on `colortbl` completely. If you experience any issues, please report on github. 
+Note: `kableExtra` was using `xcolor` with the `table` option for alternative row color before 1.0. However, the recent updates in `fancyvbr` causes a clash in `xcolor` option. Therefore, we removed the `xcolor` dependency in version 1.0 and started to rely on `colortbl` completely. 
+
+In reality, most cases, you still need `xcolor` to define new colors. The tricky part is that, if you are using a older version of `rmarkdown`, `xcolor` is not included in the template while in recent version, after `rmarkdown` started to use the default pandoc template, `xcolor` is included by default. To minimize the effort, we chose to load `xcolor` in the end. 
 
 ## Plain LaTeX
 Plain LaTeX table looks relatively ugly in 2017.
diff --git a/docs/awesome_table_in_pdf.pdf b/docs/awesome_table_in_pdf.pdf
index 605a3e1..64acf25 100644
--- a/docs/awesome_table_in_pdf.pdf
+++ b/docs/awesome_table_in_pdf.pdf
Binary files differ
diff --git a/docs/awesome_table_in_pdf.toc b/docs/awesome_table_in_pdf.toc
index ca565b0..31d88d3 100644
--- a/docs/awesome_table_in_pdf.toc
+++ b/docs/awesome_table_in_pdf.toc
@@ -15,7 +15,7 @@
 \contentsline {subsection}{Font Size}{10}{section*.16}%
 \contentsline {section}{Column / Row Specification}{10}{section*.17}%
 \contentsline {subsection}{Column spec}{10}{section*.18}%
-\contentsline {subsection}{Insert Images into Columns}{11}{section*.19}%
+\contentsline {subsection}{Insert Images into Columns}{12}{section*.19}%
 \contentsline {subsection}{Row spec}{13}{section*.20}%
 \contentsline {subsection}{Header Rows}{14}{section*.21}%
 \contentsline {section}{Cell/Text Specification}{14}{section*.22}%
@@ -24,7 +24,7 @@
 \contentsline {subsection}{Text Specification}{16}{section*.25}%
 \contentsline {section}{Grouped Columns / Rows}{17}{section*.26}%
 \contentsline {subsection}{Add header rows to group columns}{17}{section*.27}%
-\contentsline {subsection}{Group rows via labeling}{17}{section*.28}%
+\contentsline {subsection}{Group rows via labeling}{18}{section*.28}%
 \contentsline {subsection}{Row indentation}{19}{section*.29}%
 \contentsline {subsection}{Group rows via multi-row cell}{19}{section*.30}%
 \contentsline {section}{Table Footnote}{23}{section*.31}%