Greasy Fork is available in English.
remove header logo - change from blue to grey theme.....
// ==UserScript==
// @name zz Reddit Edit - Grey - Pushka's stuff
// @namespace english
// @description remove header logo - change from blue to grey theme.....
// @include http*://*reddit.com*
// @version 1.13
// @run-at document-end
// @grant GM_addStyle
// ==/UserScript==
// Main - CSS hides two classes - video add box, and call to action box under it. - also social media
var style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = '/*\n*//*Reddit Edit*//*\n*//*\n*//*edit header icon*//*\n*/#header-img-a img,#header-img img, #header-img{display:none !important;}/*\n*/#header-bottom-left span{display: inline-block !important;}/*\n*//*\n*//*\n*//*header bar*//*\n*/#header-bottom-left{background-color: #E2E2E2; position: relative; display: table;}/*\n*/#header { border-bottom: 1px solid #939393; background-color: #E2E2E2; }/*\n*//*\n*/#header-bottom-right { background-color: #FFFFFF;}/*\n*//*\n*//*#header-bottom-left .pagename a{text-indent: -9999px; background-image: @@@}*//*\n*//*\n*/a,.md a { text-decoration: underline; color: #935454; }/*\n*//*\n*//*\n*/#sr-header-area { border-bottom: none;}/*\n*/#sr-header-area a{text-decoration: none;}/*\n*/#sr-header-area a:hover{text-decoration: underline;}/*\n*//*\n*//*yellow message box*//*\n*/.infobar { background-color: #EFEFEF; border: 1px solid #424242;}/*\n*//*\n*//*top menu*//*\n*/.tabmenu li a { background-color: inherit !important;}/*\n*/ .tabmenu a, .tabmenu .md a { text-decoration: underline; color: #7E7E7E;}/*\n*/.tabmenu li.selected a { color: white; background-color: rgb(165, 165, 165) !important; border:none; z-index: 100; padding: 3px 7px;}/*\n*/ .tabmenu a:hover, .tabmenu .md a:hover {text-decoration: none;}/*\n*//*\n*/#header-bottom-left span,#header-bottom-left ul{padding-bottom: 5px;}/*\n*//*\n*//*submit buttons*//*\n*//*\n*/.morelink a { display: block; color: #DADADA; text-decoration: none; letter-spacing: 0.04em;}/*\n*//*\n*/.morelink a:hover{background-image: none;background-color: #000;border-color: #000;}/*\n*//*\n*/.submit:hover,.morelink:hover{background-image: none;}/*\n*//*\n*/.morelink {/*\n*/ display: block;/*\n*//*\n*/ border: 1px solid #000000;/*\n*/ background: #6C6C6C none repeat-x scroll center left;/*\n*/ background-image: none;/*\n*/ font-size: 125%;/*\n*/ font-weight: bold;/*\n*/ letter-spacing: -1px;/*\n*/ line-height: 22px;/*\n*/ height: 25px;/*\n*/}/*\n*//*\n*/.submit .nub {display: none;}/*\n*//*\n*//*\n*//*minimalism*//*\n*/.footer-parent,.sidecontentbox,div.create {display: none;}/*\n*//*\n*//*\n*//*\n*//*\n*//*\n*//*submit links boxes blue*//*\n*/.roundfield { background-color: #E7E7E7;}/*\n*//*\n*/.content.submit .info-notice { background-color: #ECECEC; border: 1px solid #242424;}/*\n*//*\n*//*\n*//*post page*//*\n*/.link .usertext-body .md { border: 1px solid #B3B3B3;}/*\n*//*\n*/.thing .title:visited, .thing.visited .title { color: #7E6E8C;}/*\n*//*\n*/.thumbnail.self { background-image: url(https://a.thumbs.redditmedia.com/C_XAWzXeooT5q5aKM2K35zt5lz13buH8vI71sCJsCQ0.png) ; background-repeat: no-repeat; background-position: inherit;}/*\n*//*\n*/.linkinfo { border: 1px solid #000000; background-color: #F7F7F7;}/*\n*//*\n*/.fancy-toggle-button .remove,.fancy-toggle-button .add { padding: 2px 9px 5px 9px;}/*\n*//*\n*/.gold-accent { background-color: #FDFCED; border: solid 1px #000000; color: #9a7d2e;}/*\n*/.error { color: rgb(176, 18, 18); font-size: small;}/*\n*//*\n*/.thing .title,.title ,.may-blank { color: rgb(16, 16, 165) !important;}/*\n*//*\n*/a:hover,.md a:hover { text-decoration: none !important; color: #515151; }/*\n*//*\n*/.content { z-index: 1; margin: 17px 15px 0px 15px;}/*\n*//*\n*/.side .md { font-size: 1.023em;}/*\n*//*\n*//*\n*/.new-comment .usertext-body {/*\n*/ background-color: #FDFDFD;/*\n*/ border: solid 1px #AEAEAE;/*\n*/ margin: -1px 0;/*\n*/ padding: 4px 4px;/*\n*/}/*\n*//*\n*/.entry form{padding:4px;}/*\n*//*\n*/body{padding-bottom: 55px;}/*\n*//*\n*/.gold-accent .title{color: #583800 !important;}/*\n*//*\n*//*\n*/ ';
document.getElementsByTagName('head')[0].appendChild(style);