diff --git a/modules/history-substring-search/README.md b/modules/history-substring-search/README.md
index 6bfe4e6..27a4a78 100644
--- a/modules/history-substring-search/README.md
+++ b/modules/history-substring-search/README.md
@@ -36,6 +36,18 @@ To enable highlighting for this module only, add the following line to
 
     zstyle ':prezto:module:history-substring-search' color 'yes'
 
+To set the query found color, add the following line to *zpreztorc*:
+
+    zstyle ':prezto:module:history-substring-search:color' found ''
+
+To set the query not found color, add the following line to *zpreztorc*:
+
+    zstyle ':prezto:module:history-substring-search:color' not-found ''
+
+To set the search globbing flags, add the following line to *zpreztorc*:
+
+    zstyle ':prezto:module:history-substring-search' globbing-flags ''
+
 Authors
 -------
 
diff --git a/modules/history-substring-search/init.zsh b/modules/history-substring-search/init.zsh
index ea20fff..f6ef84d 100644
--- a/modules/history-substring-search/init.zsh
+++ b/modules/history-substring-search/init.zsh
@@ -13,11 +13,24 @@ pmodload 'editor'
 source "${0:h}/external/zsh-history-substring-search.zsh"
 
 #
-# Styles
+# Search
 #
 
+zstyle -s ':prezto:module:history-substring-search:color' found \
+  'HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND' \
+    || HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND='bg=magenta,fg=white,bold'
+
+zstyle -s ':prezto:module:history-substring-search:color' not-found \
+  'HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND' \
+    || HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND='bg=red,fg=white,bold'
+
+zstyle -s ':prezto:module:history-substring-search' globbing-flags \
+  'HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS' \
+    || HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS='i'
+
 if zstyle -t ':prezto:module:history-substring-search' case-sensitive; then
-  unset HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS
+  HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS=\
+    "${HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS//i}"
 fi
 
 if ! zstyle -t ':prezto:module:history-substring-search' color; then
@@ -28,7 +41,7 @@ fi
 # Key Bindings
 #
 
-if [[ -n $key_info ]]; then
+if [[ -n "$key_info" ]]; then
   # Emacs
   bindkey -M emacs "$key_info[Control]P" history-substring-search-up
   bindkey -M emacs "$key_info[Control]N" history-substring-search-down
diff --git a/runcoms/zpreztorc b/runcoms/zpreztorc
index 5494fd9..932edc3 100644
--- a/runcoms/zpreztorc
+++ b/runcoms/zpreztorc
@@ -58,6 +58,19 @@ zstyle ':prezto:module:editor' keymap 'emacs'
 # Set the command prefix on non-GNU systems.
 # zstyle ':prezto:module:gnu-utility' prefix 'g'
 
+#
+# History Substring Search
+#
+
+# Set the query found color.
+# zstyle ':prezto:module:history-substring-search:color' found ''
+
+# Set the query not found color.
+# zstyle ':prezto:module:history-substring-search:color' not-found ''
+
+# Set the search globbing flags.
+# zstyle ':prezto:module:history-substring-search' globbing-flags ''
+
 #
 # Pacman
 #