update documentation
diff --git a/R/row_spec.R b/R/row_spec.R
index 1d5d500..7a17e8c 100644
--- a/R/row_spec.R
+++ b/R/row_spec.R
@@ -13,6 +13,10 @@
#' need to be emphasized.
#' @param monospace A T/F value to control whether the text of the selected column
#' need to be monospaced (verbatim)
+#' @param color A character string for column text color. Here please pay
+#' attention to the differences in color codes between HTML and LaTeX.
+#' @param background A character string for column background color. Here please
+#' pay attention to the differences in color codes between HTML and LaTeX.
#'
#' @examples x <- knitr::kable(head(mtcars), "html")
#' row_spec(x, 1, bold = TRUE, italic = TRUE)