diff --git a/README.md b/README.md
index 5ce5db6..82fa31e 100644
--- a/README.md
+++ b/README.md
@@ -23,8 +23,8 @@ filters:
 Then you can use the span syntax markup to highlight text in your document, *e.g.*:
 
 ```markdown
-[Red]{colour="#b22222"} # UK
-[Blue]{color="#0000FF"}  # US
+[Red]{colour="#b22222" bg-colour="#abc123"} # UK
+[Blue]{color="#0000FF" bg-color="#ABC123"} # US
 ```
 
 ## Example
diff --git a/example.qmd b/example.qmd
index 1c9c774..fe7987c 100644
--- a/example.qmd
+++ b/example.qmd
@@ -48,6 +48,8 @@ Then you can use the span syntax markup to highlight text in your document.
 ::: {.content-hidden when-format="pptx"}
 :::: {layout-ncol="2"}
 ::::: {#UK}
+### United Kingdom Spellings
+
 ```markdown
 [Red text]{colour="#b22222"}
 ```
@@ -70,6 +72,8 @@ Then you can use the span syntax markup to highlight text in your document.
 :::::
 
 ::::: {#US}
+### United States Spellings
+
 ```markdown
 [Blue text]{color="#0000FF"}
 ```
@@ -96,6 +100,8 @@ Then you can use the span syntax markup to highlight text in your document.
 ::: {.content-visible when-format="pptx"}
 :::: {.columns}
 ::::: {.column width="50%"}
+### United Kingdom Spellings
+
 ```markdown
 [Red text]{colour="#b22222"}
 ```
@@ -118,6 +124,8 @@ Then you can use the span syntax markup to highlight text in your document.
 :::::
 
 ::::: {.column width="50%"}
+### United States Spellings
+
 ```markdown
 [Blue text]{color="#0000FF"}
 ```