Pub.dev dark mode (https://github.com/dart-lang/pub-dev/issues/4416)

style.css

/** https://github.com/dart-lang/pub-dev/issues/4416 **/
body {
    background-color: #10161e;
    color: #dcdcdc;
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    overflow-wrap: break-word;
}
a {
    color: rgb(81, 167, 254);
}
.mdc-dialog .mdc-dialog__surface {
    background: #1C2834;
}
.mdc-dialog .mdc-dialog__title,
.mdc-dialog .mdc-dialog__content {
    color: #dcdcdc;
}
/* Main page */
main.landing-main {
    background-image: none;
}
.home-block.home-block-ff,
.home-block.home-block-pow {
    background: #10161e;
}
.home-block .mini-list-item {
    background: #1C2834;
}
.home-block .mini-list-item:hover {
    background: #273848;
}
@media (min-width: 641px) {
    .home-block .mini-list-item-body:before {
        background: linear-gradient(transparent 90%, #1C2834);
    }
    .home-block .mini-list-item:hover .mini-list-item-body:before {
        background: linear-gradient(transparent 90%, #273848);
    }
}
/* Search page */
.search-form-container .search-form-linked-checkbox:hover {
    background: #273848;
}
.search-form-container .search-form-linked-checkbox a {
    color: #dcdcdc;
}
.mdc-checkbox {
    filter: invert(100%);
}
.sort-control .sort-control-popup .sort-control-option {
    background: #1C2834;
}
.sort-control .sort-control-popup .sort-control-option:hover,
.sort-control .sort-control-popup .sort-control-option.selected {
    background: #27425e;
}
.listing-info .count {
    background: #1C2834;
}
.thumbnail-container {
    background: #10161e;
}
.packages .packages-item:hover,
.publishers .publishers-item:hover {
    background: #1C2834;
}
.packages .packages-api {
    color: #dcdcdc;
}
.pagination > li {
    background-color: #10161e;
}

/* Detail page */
a.-x-ago {
    color: #dcdcdc;
}
h1.title:hover img[alt~="icon"] {
    opacity: 1;
}
h1.title img[alt~="icon"] {
    opacity: .5;
}
img[alt~="icon"],
img[alt~="Icon"],
img[alt="verified publisher"],
img.inline-icon-img,
img.pkg-page-title-copy-icon,
img.version-table-icon {
    filter: invert(100%);
}
img.pkg-page-title-copy-icon {
    opacity: .5 !important;
}
img.pkg-page-title-copy-icon:hover {
    opacity: .8 !important;
}
footer.site-footer > a > img.inline-icon,
button#-pub-like-icon-button > img {
    filter: none !important;
}

.pkg-page-title-copy .pkg-page-title-copy-feedback {
    background: #161f2b;
}
.package-badge {
    background: none;
    border-color: #13B9FD;
    color: #13B9FD;
}
.-pub-tag-badge {
    background: #1c1c26;
}
.detail-tabs-header {
    background: #161f2b;
}
.detail-tabs-header > .tab-button,
.detail-tabs-header > .tab-link > a {
    color: #dcdcdc;
}
.detail-tabs-header > .tab-button.-active {
    color: #13B9FD;
    border-bottom-color: #13B9FD;
}
.detail-tabs-header>.tab-button.-private,
.detail-tabs-header>.tab-link.-private > a {
    color: #c64444;
    border-bottom-color: #c64444;
}
.detail-info-box > .title:not(:first-child) {
    border-top: 1px solid #4d4d4d;
}
.packages-scores .packages-score-value.-has-value,
.score-key-figures .score-key-figure-title {
    color: #13B9FD;
}
.packages-scores .packages-score-label,
.score-key-figures .score-key-figure-label {
    color: #7d848c;
}
.markdown-body h1,
.markdown-body h2 {
    border-bottom: 1px solid #4d4d4d;
}
.markdown-body code, code {
    background: #2e2e3e;
}
.markdown-body img {
    background-color: #10161e;
}
.markdown-body table tr {
    background-color: transparent !important;
}
summary:hover {
    background-color: rgb(23, 32, 43) !important;
}
pre {
    border: 1px solid #444 !important;
    color: white !important;
    background-color: rgb(23, 32, 43) !important;
}
.hljs {
    background: #2e2e3e;
    color: #dcdcdc;
}
.hljs-keyword, .hljs-selector-tag, .hljs-subst {
    color: white;
    font-weight: bold;
}
.hljs-string, .hljs-doctag {
    color: rgb(255, 100, 100);
}
.hljs-built_in, .hljs-builtin-name {
    color: #0086b3;
}
.hljs-tag, .hljs-name, .hljs-attribute {
    color: #2424bb;
}
.hljs-number,
.hljs-literal,
.hljs-variable,
.hljs-template-variable,
.hljs-tag .hljs-attr {
  color: #008080;
}
/* Admin page */
.mdc-menu-surface,
.-wide-header-detail-page .detail-header,
.-wide-header-detail-page .detail-tabs-wide-header {
    background: #1C2834;
}
.mdc-button--unelevated:not(:disabled) {
    background: #27425e;
}
:not(.mdc-list-item--disabled).mdc-list-item,
.mdc-button--unelevated:not(:disabled) {
    color: #dcdcdc;
}
.mdc-select--filled:not(.mdc-select--disabled) .mdc-select__anchor {
    background: #1C2834;
}
.mdc-select:not(.mdc-select--disabled) .mdc-floating-label,
.mdc-select:not(.mdc-select--disabled) .mdc-select__selected-text {
    color: #dcdcdc;
}
.mdc-text-field--outlined:not(.mdc-text-field--disabled) .mdc-notched-outline__leading,
.mdc-text-field--outlined:not(.mdc-text-field--disabled) .mdc-notched-outline__notch,
.mdc-text-field--outlined:not(.mdc-text-field--disabled) .mdc-notched-outline__trailing {
    border-color: #dcdcdc;
}
.mdc-text-field:not(.mdc-text-field--disabled) .mdc-text-field__input {
    color: #dcdcdc;
}