This should work. Plug ‘er in. I’ve made it black and white.
body{font-family:roboto,sans-serif;font-size:14px;margin:0;padding:0}::selection{background:#f0ad4e}.hide-link{color:#333!important;text-decoration:none!important}.mentioned{font-size:110%;font-weight:700;color:WHITE
#eea236}.panel.panel-default.post_mention{border:1px solid
#eea236}.username_mention{color:#e6582b}strong,b{font-weight:700}pre,code{font-family:roboto mono,monospace}div,a,span,p,img,table{box-sizing:border-box}.m-header{width:100%;position:fixed;top:0;z-index:100000}.m-header-push{height:65px}.hidden-unread{position:relative;width:1px;height:1px;top:-55px}.m_top{padding:15px;background-color:#5eabd2}.m-indicator{height:2px;background-color:#ccc;width:100%}.m-indicator-progress{height:2px;background-color:aqua;width:0}.m-header-spacer{height:1px;background-color:#fff;width:100%}.m-hidden-menu{display:none;width:100%;background:#fff}.m-menu-item{border-radius:0!important;padding:12px}.m_top .m_title{display:inline-block;font-weight:700;font-size:21px}.m_top .m_title a{color:#000}.m_top .buttons{display:inline-block;float:right;margin-top:-5px}.btn-circle{width:40px;height:40px;text-align:center;padding:6px 0;font-size:18px;line-height:1.428571429;border-radius:50%}.btn-circle.btn-lg{width:50px;height:50px;padding:10px 16px;font-size:18px;line-height:1.33;border-radius:25px}.m_warning{text-align:center;font-weight:700}.forum-group{width:100%}.btn-circle:before{content:'';display:inline-block;vertical-align:middle;height:100%;margin-top:2px}.btn-topic{text-overflow:ellipsis;overflow:hidden}.btn.btn-lg.btn-forum,.btn.btn-lg.btn-topic{display:block;text-align:left;padding-left:10px}.btn.btn-lg.btn-topic{font-size:14px;padding-top:14px;padding-bottom:14px}.btn.btn-lg.btn-topic i{font-size:18px;position:relative;top:0;margin-right:2px}.btn.btn-lg.btn-topic.m-unread-topic i{top:0}.m_topic_link_subtitle{display:inline-block;position:relative;left:22px;top:-2px}.btn.btn-lg.m-unread-topic{border-left:6px solid
#eea236;padding-left:4px;width:100%}.btn.btn-lg.m-title-subtitle.btn-topic.m-unread-topic i{left:0;top:10px}.btn.btn-lg.m-title-subtitle.btn-topic i{left:0;top:10px}.btn.btn-lg.btn-topic i{left:0;top:0}.btn.btn-lg.m-title-subtitle{padding-top:5px;padding-bottom:5px}.btn-topic.m-unread-topic i{color:
#eea236}.stick-right{text-align:right;margin-right:5px}.pagination.less-margin{margin:5px 0}.m-reply{text-align:right;margin-right:5px}.att-img{margin:15px 0 5px}.m_post_body img{max-width:100%}.gensmallimg{font-size:85%}a.gensmallimg{margin-bottom:4px;display:inline-block}.m-post-holder{padding:0 5px}.m-post-holder .m-post-subject,.m-post-holder textarea{}.m-post-buttons{text-align:center;margin-top:10px}.m-post-buttons .btn-lg{margin:0 10px;padding:10px 26px}.m-lock-topic{margin:2px 0 -13px;width:50%}.m-lock-post{margin-top:11px!important;width:50%}.m-lock-topic input[type=checkbox]{top:-3px;margin-left:-20px}.m-delete-post-check{display:inline-block;margin-top:2px}.m-post-bb-buttons{display:none;text-align:center;margin-top:10px}.m-post-bb-buttons .btn{margin-bottom:3px}.m-show-post-buttons{margin-top:2px}.m_mod_option_holder{margin:15px 5px}.m_mod_option_holder .form-inline .form-group{display:inline-block}.m_mod_option_holder .form-inline select{display:inline-block;width:auto}.codecontent{display:block;padding:9.5px;margin:0 0 10px;font-size:13px;line-height:1.42857143;color:#333;word-break:break-all;word-wrap:break-word;background-color:BLACK#f5f5f5;border:1px solid #ccc;border-radius:4px;font-family:roboto mono,Menlo,Monaco,Consolas,courier new,monospace;overflow:auto;box-sizing:border-box}.calHolder{border:1px solid #00f;background:#fff;margin:5px;padding:5px}.calTitle{font-size:110%}.userPostTable{background-color:#fff;background-color:BLACK(255,255,255,.5);border-collapse:collapse}.userPostTable tr:nth-child(odd){background-color:BLACK
#eef;background-color:BLACK(0,0,255,.1)}.userPostTable td,.userPostTable th{padding:3px;border:1px solid #999}.userPostTable th{font-weight:700;border-bottom:2px solid #999}.hidey{display:none}.clear{clear:both}a{color:#337ab7}.fake_button{display:block;float:left;width:20%;border:1px solid #859bfb;padding:3px;margin-right:2%;-webkit-border-radius:5px;-moz-border-radius:5px;border-radius:5px;text-align:center;color:#00a;text-decoration:underline;background:transparent url(styles/MiniBeex/imageset/box_bg.png) repeat-x}.big_button{width:50%;font-size:16px;font-weight:700}.center_me{float:none;margin-left:auto;margin-right:auto}.loginForm .gensmall{font-size:12px}.loginForm{margin-left:3%}.loginForm input[type=text],.loginForm input[type=password]{width:96%;font-size:18px}.loginForm input[type=submit]{font-size:18px;margin:0 auto;padding:4px 18px}.m_top_menu{border:1px solid #859bfb;margin:4px 15px;padding:3px;background:transparent url(styles/MiniBeex/imageset/box_bg.png) repeat-x;-webkit-border-radius:5px;-moz-border-radius:5px;border-radius:5px}.m_login,.m_messages{float:left;width:50%;text-align:center}.m_breadcrumbs{margin:4px 12px;padding:3px}.m_breadcrumbs a{width:28%}.m_page_title{text-align:center;font-size:18px;font-weight:700}.m_page_title a{color:#000;text-decoration:none}.m_subtitle{text-align:center;font-size:16px}.m_page_number{float:left;margin:3px 0 0 5px}.m_post{margin:8px 0 0}.m_post .panel{margin:0 2px}.m_post .panel-heading{padding:4px 10px}.m_post .panel-body{padding:5px}.edit-reason{margin:15px 5px 5px;padding:5px;background:rgba(0,0,0,.02);border:1px solid rgba(0,0,0,.1)}.avatar{width:42px;max-height:33px;display:inline-block}img{border:0}.avatar img{max-width:33px;max-height:33px}.m_post_author{display:inline-block;font-weight:700;margin-right:10px;margin-top:6px}.m_post_author a{color:#000}.m_post_date{float:right;margin-right:10px;font-size:12px;margin-top:7px}.small_font{font-size:11px}.m_post_body{clear:both;padding:5px 1px}.m_post_options{margin-top:3px}.m_quote_button{float:right}.m_search a,.m_unanswered a,.m_admin_link a,.m_mark_read a{float:right;width:15%;font-size:12px;margin-top:0}.m_unanswered a,.m_admin_link a{width:20%}.m_form_left{width:30%;float:left;text-align:right;clear:left}.m_form_right{width:68%;float:right}.m_form_right .post{width:80%}.formline{width:100%;border-top:1px solid #99f;margin:5px 0 4px}.m_footer_text{clear:both;margin:18px 20px 10px;font-size:13px;text-align:center}.quotetitle{margin:0;padding:5px 5px 2px;border:1px solid #dadada;border-bottom:none;background-color:#f0f0f0;font-weight:700;border-top-left-radius:5px;border-top-right-radius:5px}.quotecontent{margin:0;padding:2px 5px 5px;border:1px solid #dadada;border-top:none;background-color:#fafafa;border-bottom-left-radius:5px;border-bottom-right-radius:5px}.jqspoiler .quotetitle{border:none;cursor:pointer;margin:0}.jqspoiler .quotecontent{border:none;margin:0}.jqspoiler{border:1px solid #859bfb;padding:0}.m_topic_holder,.m_subforum_link{border:1px solid #859bfb;margin:4px 5px;padding:3px;background:transparent url(styles/MiniBeex/imageset/box_bg.png) repeat-x;-webkit-border-radius:5px;-moz-border-radius:5px;border-radius:5px}.m_subforum_link{padding:7px 10px}.m_link_to_start{float:left;clear:left;margin:6px 4px 4px 2px}.m_topic_link_subtitle{font-size:12px}.m_unread_topic a{color:#a00}.m_no_sub{margin:6px}.m_post_submit_button{font-size:15px;font-weight:700;width:24%}.m_post_not_submit_button{font-size:13px;width:18%}.m_add_attach_holder{padding:10px;margin:15px 3px;border:1px solid #859bfb;-webkit-border-radius:5px;-moz-border-radius:5px;border-radius:5px}.m_message_title{font-weight:700;margin:20px;text-align:center}.m_message_text{margin:0 20px 20px;text-align:center}.m_message_text a{display:inline-block;margin-bottom:0;font-weight:400;text-align:center;white-space:nowrap;vertical-align:middle;touch-action:manipulation;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;background-image:none;border:1px solid #ccc;color:#333;background-color:#fff;padding:10px 16px;font-size:18px;line-height:1.3333333;border-radius:6px;text-decoration:none}.m_message_text a:hover,.m_message_text a:active{text-decoration:none}.m_post_body img{text-decoration:none}.twitter{margin:5px;padding:5px;background-color:rgba(0,0,255,.1);border-color:rgba(0,0,255,.2)}.twitter .twitter-name{font-weight:700;margin-bottom:5px}.twitter .twitter-text{}.twitter .twitter-text img{max-height:400px}.at-menuOuter{background-color:BLACK#e5e5ff;border:1px solid #c8c8ff;border-bottom:none;position:absolute;z-index:100000;box-sizing:border-box;max-height:200px;overflow-y:scroll}.at-menuInner{border-bottom:1px solid #c8c8ff;padding:5px 3px;cursor:pointer}.at-menuInner:hover{background-color:BLACK(0,0,255,.1)}