Code Comment Color and Contrast - CSS - in Forum

Tried two of the eye-popping tools for Chrome, but could not get them to do what I wanted... I'm sure it is on my part...

But opening the developer tool (with right-click inspect) and entering (copy-paste) the following code string in the console did the job:

(function(st){ var rs = document.styleSheets[0].cssRules, i = rs.length; while (i > 0) { i--; if (rs[i].selectorText == st) return rs[i]; } })("pre .com, code .com").style.color="#C797E7";