Yes, that's one of the ways to disable the border. This usage is fine.
Speaking of existing monitoring solutions, take a look at Munin. It generates an HTML page with plots and it's even written in Perl.
In reply to Re^3: How to PRINT CGI html table to a PNG file
by aitap
in thread How to PRINT CGI html table to a PNG file
by theravadamonk
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