>>839 , >>844
分かったよ
>>835
こんなんでどうよ
// ==UserScript==
// @name hoge
// @include http://www.realtek.com.tw/downloads/downloadsView.aspx?*
// ==/UserScript==

removeTdColor();
setTrColor("red");
function setTrColor (color) {
Array.forEach(document.querySelectorAll(".etxt-bold-660099 tr"), function (node) {
node.style.color = color;
});
}
function removeTdColor () {
var hrefReg = /etxt\.css$/;
for (let i = 0, sheet; sheet = document.styleSheets[i]; ++i) {
if (!hrefReg.test(sheet.href))
continue;

for (let j = 0, rule; rule = sheet.cssRules[j]; ++j) {
if (rule.selectorText === ".etxt-top10-box") {
rule.style.color = "";
return;
}
}
};
}