Okay so I figured it out after spending an entire night into the noon hour bashing my head against a wall. Basically, everything you need to edit is in the trend_graph.php in the root of the web folder. That was the culprit.
And to deal with the issue with the text was as easy as adding
HTML Code:
style="background-color: white"
to the existing code in the playerinfo_general.php because
apparently the text create when the graph is generated has transparency for some reason...?
Also I have taken the liberty of creating a new repo exclusively for the web side of hlstatsx if anyone is interested in it.
https://github.com/brysondev/hlstatsx-revamped