Change the background color in all web pages to protect your eyes. we map different original color to different new colors automatically to make it looks better than others which only replace the original color with only one color.
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// ==UserScript==
// @name Browser Background Color Controller
// @namespace Background Color
// @description Change the background color in all web pages to protect your eyes. we map different original color to different new colors automatically to make it looks better than others which only replace the original color with only one color.
// @version 2.3
// @include http*
// @include ftp
// @exclude
// @license MIT
// @grant GM_addStyle
// ==/UserScript==
// Threshold
var Rth = 230;
var Gth = 230;
var Bth = 230;
var color = "#FDF6E3" //New color
var renderClasses = ["nH"];
function parseRGB(RGB) {
if (RGB == undefined) return[0, 0, 0, 0];
var rgba = RGB.replace(/[rgba\(\)]/g, '');
var bg = rgba.split(",");
if (bg < 3) return[0, 0, 0, 0];
return [parseInt(bg[0]), parseInt(bg[1]), parseInt(bg[2]), parseInt(bg[3])];
}
function adjust(color, amount) {
return '#' + color.replace(/^#/, '').replace(/../g, color => ('0'+Math.min(255, Math.max(0, parseInt(color, 16) + Math.floor(amount))).toString(16)).substr(-2));
}
function realBackgroundColor(elem) {
var transparent = 'rgba(0, 0, 0, 0)';
if (!elem) return transparent;
var computed = getComputedStyle(elem);
if (computed.backgroundImage !== "none") {
return undefined;
}
var bg = computed.backgroundColor;
if (bg === transparent) {
return realBackgroundColor(elem.parentElement);
} else {
return bg;
}
}
function changeElementsColor() {
var allTags = document.getElementsByTagName("*");
var classes = [];
var colors = []
var hover = [].slice.call(document.querySelectorAll( ":hover" ));
for (var i = 0; i < allTags.length; i++) {
try{
if (allTags[i].style.backgroundColor == color || allTags[i].style.bgColorAlreadySet == true) {
continue;
}
allTags[i].style.bgColorAlreadySet = true;
var rbgcolor = realBackgroundColor(allTags[i]);
var RGB = parseRGB(rbgcolor);
if (RGB[0] > Rth && RGB[1] > Gth && RGB[2] > Bth || allTags[i].tagName == "BODY") {
//console.log(Math.max(-10, (RGB[0] + RGB[1] + RGB[2]) / 3 - 255));
var acolor = adjust(color, Math.max(-10, (RGB[0] + RGB[1] + RGB[2]) / 3 - 255));
allTags[i].style.backgroundColor = acolor;
//console.log(allTags[i].classList.map(x=>`.${x}{background-color: #FDF6E3}\n`))
//for (var j = 0; j < allTags[i].classList.length; ++j){
// classes.push(`.${allTags[i].classList[j]}{background-color: ${acolor}}\n`);
//}
}
}catch(err) {
console.log(err);
}
}
//console.log(classes);
//GM_addStyle(classes.join(""));
//GM_addStyle(renderClasses.map(x=>`.${x}{background-color: ${color}}\n`).join(""));
}
function handleAutoPage() {
var observer = new window.MutationObserver(function(mutations) {
var currentLen = document.getElementsByTagName("*").length;
if (mutations[0].addedNodes) {
setTimeout(function() {
if(document.getElementsByTagName("*").length == currentLen){
console.log(document.getElementsByTagName("*").length)
changeElementsColor();
}
}, 50);
}
});
observer.observe(document, {
childList: true,
subtree: true
});
}
(function() {
changeElementsColor();
handleAutoPage();
})();