Add a little bit of color to the User Guide by supplying a CSS stylesheet,

which adds colored borders to notes and screen contents.

docs/lcdproc-user/Makefile.am

@@ -9,6 +9,7 @@ EXTRA_DIST =	bookinfo.docbook \
 		how-to-obtain.docbook \
 		installation.docbook \
 		introduction.docbook \
+		lcdproc-user.css \
 		lcdproc-user.docbook \
 		license.docbook \
 		parameters.ent \
@@ -17,13 +18,15 @@ EXTRA_DIST =	bookinfo.docbook \
 
 
 ## convenience targets
-xmlto = /usr/bin/xmlto
+xmlto ?= /usr/bin/xmlto
 userguidedir = $(DESTDIR)$(htmldir)/user-guide/
 
 .PHONY: install-html-userguide
 
-install-html-userguide: $(xmlto) lcdproc-user.docbook
+install-html-userguide: $(xmlto) lcdproc-user.docbook lcdproc-user.css
 	$(mkinstalldirs) $(userguidedir)
-	$(xmlto) html -o $(userguidedir) lcdproc-user.docbook
+	$(xmlto) html -o $(userguidedir) \
+	  --stringparam html.stylesheet=lcdproc-user.css lcdproc-user.docbook
+	cp lcdproc-user.css $(userguidedir)
 
 ## EOF