A High Contrast Theme For Twitter - deprecated

Twitter High Contrast Theme

.js-global-actions li#global-nav-home a {
    border-bottom-color: #e8e800;
}

.global-nav-inner {
    background: black;
}

.global-nav {
    border-bottom-color: #e8e800;
}

.u-textUserColor,
.u-textUserColorHover:hover,
.u-textUserColorHover:hover .ProfileTweet-actionCount,
.u-textUserColorHover:focus {
    color: #e8e800 !important;
}

#global-actions > li:hover > a,
#global-actions > li > a:focus,
#global-actions > li.active .text,
.DashUserDropdown.dropdown-menu .nightmode-toggle .Icon,
.nav.right-actions > li > a:hover,
.nav.right-actions > li > a:focus {
    color: #e8e800;
}


.DashboardProfileCard.module {
    border-color: #e8e800;
    background: black;
}

a.DashboardProfileCard-avatarLink.u-inlineBlock {
    background-color: black;
}

img.DashboardProfileCard-avatarImage.js-action-profile-avatar {
    border-color: black;
}


.account-group .username,
.time,
.time a,
.created-via {
    color: #d0c4c4;
}

span.ProfileCardStats-statLabel.u-block {
    color: #fff;
}

.module .flex-module {
    background-color: black;
    border-color: #e8e800;
}

a,
.btn-link,
.btn-link:focus,
.icon-btn,
.pretty-link b,
.pretty-link:hover s,
.pretty-link:hover b,
.pretty-link:focus s,
.pretty-link:focus b,
.metadata a:hover,
.metadata a:focus,
a.account-group:hover .fullname,
a.account-group:focus .fullname,
.account-summary:focus .fullname,
.message .message-text a,
.message .message-text button,
.stats a strong,
.plain-btn:hover,
.plain-btn:focus,
.dropdown.open .user-dropdown.plain-btn,
.open > .plain-btn,
#global-actions .new:before,
.module .list-link:hover,
.module .list-link:focus,
.stats a:hover,
.stats a:hover strong,
.stats a:focus,
.stats a:focus strong,
.find-friends-sources li:hover .source,
.stream-item a:hover .fullname,
.stream-item a:focus .fullname,
.stream-item .view-all-supplements:hover,
.stream-item .view-all-supplements:focus,
.tweet .time a:hover,
.tweet .time a:focus,
.tweet .details.with-icn b,
.tweet .details.with-icn .Icon,
.stream-item:hover .original-tweet .details b,
.stream-item .original-tweet.focus .details b,
.stream-item.open .original-tweet .details b,
.client-and-actions a:hover,
.client-and-actions a:focus,
.dismiss-btn:hover b,
.tweet .context .pretty-link:hover s,
.tweet .context .pretty-link:hover b,
.tweet .context .pretty-link:focus s,
.tweet .context .pretty-link:focus b,
.list .username a:hover,
.list .username a:focus,
.list-membership-container .create-a-list,
.list-membership-container .create-a-list:hover,
.new-tweets-bar,
.card .list-details a:hover,
.card .list-details a:focus,
.card .card-body:hover .attribution,
.card .card-body .attribution:focus {
    color: #e8e800;
}

.EdgeButton--secondary,
.EdgeButton--secondary:hover,
.EdgeButton--secondary:focus,
.EdgeButton--secondary:active {
    border-color: #e8e800;
    color: #e8e800;
    background-color: black;
}


.module.Trends.trends {
    border-color: #e8e800;
    background-color: black;
}

a,
a:hover,
a:focus,
a:active {
    color: #e8e800;
}

body {
    background-color: black;
}

.timeline-tweet-box {
    border-color: #e7e700 !important;
}

.home-tweet-box.tweet-box.component.tweet-user {
    background-color: black;
}

.stream-item.js-new-items-bar-container.new-tweets-bar-visible {
    border-color: #e8e800;
}


.tweet-box textarea:focus,
.tweet-box input[type=text],
.currently-dragging .tweet-form.is-droppable .tweet-drag-help,
.tweet-box[contenteditable="true"]:focus,
.RichEditor.is-fakeFocus,
.RichEditor.is-fakeFocus ~ .TweetBoxAttachments {
    border-color: #e8e800;
    box-shadow: none;
}

.stream-item:not(.no-header-background-module) {
    background-color: black;
    border-color: #e8e800;
}

.tweet {
    border-color: #e8e800;
}

.tweet:hover {
    background-color: #0c0c0c;
}

.top-timeline-tweetbox .timeline-tweet-box .tweet-form.condensed .tweet-box {
    color: #e8e800;
}

.MomentGuideNavigation {
    background-color: black;
    border-bottom: 1px solid #e8e80085;
}

.MomentsPage.MomentsPermalinkPage,
.MomentsPage.MomentsGuidePage {
    background-color: black !important;
}

.MomentCapsuleSummary--hero:hover,
.MomentCapsuleSummary--portrait:hover {
    background: black;
    border: 1px solid #e8e800;
}

.MomentCapsuleItemTweet.MomentCapsuleItemTweet--withText.js-stream-tweet.js-actionable-tweet {
    background-color: black;
    border: 1px dashed yellow;
}

.MomentFormatLink-anchor {
    border: 1px solid yellow;
}

.MomentFloatingMenu {
    background-color: black;
    border: 1px solid yellow;
}

.MomentFloatingMenu .MomentButton {
    color: yellow;
    outline: none;
}

.MomentMediaItem {
    background-color: black;
}

#global-actions > li > a {
    border-bottom-color: #e8e800;
}

.global-nav .people .count .count-inner {
    background: #e8e800;
    color: black;
}

.global-dm-nav.new.with-count .dm-new .count-inner {
    background: #e8e800;
    color: black;
}

.EdgeButton--primary,
.EdgeButton--primary:focus {
    background: #e8e800;
    color: black;
}

.EdgeButton--primary:hover,
.EdgeButton--primary:active {
    background-color: #e8e800d1;
    border-color: #e8e800d1;
    color: black;
}

.EdgeButton--primary:active {
    box-shadow: 0 0 0 2px #000000, 0 0 0 4px #e8e800a1;
}

.ProfileCard {
    background-color: black;
    border: 1px solid #e8e800;
}

.ProfileHeading-content {
    background-color: black;
    border-color: #e8e800;
}

.ProfileCanopy-navBar {
    background-color: black;
    border-bottom: 1px solid #E8E800;
}

.ProfileAvatar {
    background-color: black;
    border-color: #E8E800;
}

.ProfileNav-item--userActions {
    background-color: black;
}

.u-borderUserColor,
.u-borderUserColorHover:hover,
.u-borderUserColorHover:focus {
    border-color: #e8e800 !important;
}

.ProfilePage.is-editing .ProfilePage-editingOverlay {
    background-color: black;
}

.new-tweets-bar {
    background-color: black;
    border: 1px solid #e8e800;
}

.new-tweets-bar:hover {
    background-color: black;
    border: 1px solid #e8e800;
}

.PermalinkOverlay-with-background {
    background: rgba(0, 0, 0, 0.90);
}

.permalink-tweet:hover,
.permalink-tweet.focus {
    background-color: black;
    border: 1px solid #e8e800;
    box-sizing: border-box;
}

.PermalinkOverlay .permalink-tweet {
    background: black;
    border: 1px solid #e8e800;
}

.permalink .inline-reply-tweetbox-container {
    background-color: black;
}

.permalink .inline-reply-tweetbox {
    background-color: black;
    border: 1px solid #e8e800;
}

.RichEditor.RichEditor--emojiPicker div[contenteditable],
.RichEditor.RichEditor--emojiPicker div[contenteditable]:focus,
.RichEditor.RichEditor--emojiPicker div[contenteditable].fake-focus {
    border-color: #e8e800 !important;
}

.RichEditor,
.TweetBoxAttachments {
    border-color: #e8e800;
}

.NotificationsHeadingContent {
    background-color: black;
    border: 1px solid yellow;
}

.ActivityItem {
    border-color: #e8e800;
}

.QuoteTweet {
    border-color: #e8e80080;
}

.ActivityItem:not(.has-clickAction) .QuoteTweet--slim:hover {
    background: black;
    border-color: #e8e800;
}

.ActivityItem.has-clickAction:hover {
    background: black;
}

.modal-container {
    background: rgba(0, 0, 0, 0.90);
}

.DMActivity-header {
    background-color: black;
    border-color: #e8e800;
}

.DMInboxItem {
    border-bottom: 1px solid #e8e800;
    background-color: black;
    color: black;
}

.DMInboxItem.is-unread {
    background-color: #1d1d1d;
}


.DMInboxItem:hover {
    background-color: #3c3c3c !important;
}

.DMActivity-body {
    background-color: black;
    border: 1px solid #e8e800;
}

.DirectMessage--sent .DirectMessage-text {
    background-color: #3c3c3c;
}

.DirectMessage--received .DirectMessage-text {
    background-color: #636363;
}

.u-bgUserColorLightest {
    background-color: black !important;
    border: 1px solid #e8e800;
}

.DMButtonBar {
    background-color: black;
    border: 1px solid #e8e800;
}

.u-bgUserColor,
.u-bgUserColorHover:hover,
.u-bgUserColorHover:focus {
    background: black !important;
    border-bottom: 1px solid #e8e800;
}

.u-bgUserColor,
.u-bgUserColorHover:hover,
.u-bgUserColorHover:focus {
    background: black !important;
    border-bottom: 1px solid #e8e800;
}

.dropdown-menu {
    background: black;
    border: 1px solid #e8e800;
}

.dropdown-menu li > a:hover,
.dropdown-menu li > a:focus,
.dropdown-menu .dropdown-link:hover,
.dropdown-menu .dropdown-link:focus,
.dropdown-menu .dropdown-link.is-focused,
.dropdown-menu li:hover .dropdown-link,
.dropdown-menu li:focus .dropdown-link,
.dropdown-menu .selected a,
.dropdown-menu .dropdown-link.selected {
    background: #e8e800 !important;
    color: black !important;
}

.conversation-module .conversation-tweet-item .tweet:hover {
    background: #0C0C0C;
}

You can use it via Chrome Extension called Stylus
https://chrome.google.com/webstore/detail/stylus/clngdbkpkpeebahjckkjfobafhncgmne?hl=en

But first, use the Night Mode of Twitter then apply this High Contrast Theme

nice work Hamed Keep it up , but i think you should add style to the search bar.