lupyuen.org/light.css

 body {
     background-color: white;
     color: black;
 }

 h1,
 h2,
 h3:not(.impl):not(.method):not(.type):not(.tymethod),
 h4:not(.method):not(.type):not(.tymethod) {
     color: black;
 }

 h1.fqn {
     border-bottom-color: #D5D5D5;
 }

 h2,
 h3:not(.impl):not(.method):not(.type):not(.tymethod),
 h4:not(.method):not(.type):not(.tymethod) {
     border-bottom-color: #DDDDDD;
 }

 .in-band {
     background-color: white;
 }

 .invisible {
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 }

 .docblock code,
 .docblock-short code {
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 }

 pre {
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 }

 .sidebar {
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 }

 .sidebar .current {
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 }

 .source .sidebar {
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 }

 .sidebar .location {
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     background-color: #fff;
     color: #333;
 }

 .sidebar .version {
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 }

 .sidebar-title {
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     border-bottom-color: #777;
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 .block a:hover {
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 }

 .line-numbers span {
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 }

 .line-numbers .line-highlighted {
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 }

 .docblock h1,
 .docblock h2,
 .docblock h3,
 .docblock h4,
 .docblock h5 {
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 }

 .docblock table,
 .docblock table td,
 .docblock table th {
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 }

 .content .method .where,
 .content .fn .where,
 .content .where.fmt-newline {
     color: #4E4C4C;
 }

 .content .highlighted {
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     background-color: #ccc;
 }

 .content .highlighted a,
 .content .highlighted span {
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 }

 .content .highlighted.trait {
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 }

 .content .highlighted.traitalias {
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 }

 .content .highlighted.mod,
 .content .highlighted.externcrate {
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 .content .highlighted.enum {
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 .content .highlighted.struct {
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 .content .highlighted.union {
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 .content .highlighted.method,
 .content .highlighted.tymethod {
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 .content .highlighted.derive,
 .content .highlighted.macro {
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 .content .highlighted.constant,
 .content .highlighted.static {
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 .content .highlighted.primitive {
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 }

 .content .highlighted.keyword {
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 }

 .content .stability::before {
     color: #ccc;
 }

 .content span.enum,
 .content a.enum,
 .block a.current.enum {
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 }

 .content span.struct,
 .content a.struct,
 .block a.current.struct {
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 }

 .content span.type,
 .content a.type,
 .block a.current.type {
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 }

 .content span.foreigntype,
 .content a.foreigntype,
 .block a.current.foreigntype {
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 }

 .content span.attr,
 .content a.attr,
 .block a.current.attr,
 .content span.derive,
 .content a.derive,
 .block a.current.derive,
 .content span.macro,
 .content a.macro,
 .block a.current.macro {
     color: #068000;
 }

 .content span.union,
 .content a.union,
 .block a.current.union {
     color: #767b27;
 }

 .content span.constant,
 .content a.constant,
 .block a.current.constant,
 .content span.static,
 .content a.static,
 .block a.current.static {
     color: #546e8a;
 }

 .content span.primitive,
 .content a.primitive,
 .block a.current.primitive {
     color: #2c8093;
 }

 .content span.externcrate,
 .content span.mod,
 .content a.mod,
 .block a.current.mod {
     color: #4d76ae;
 }

 .content span.trait,
 .content a.trait,
 .block a.current.trait {
     color: #7c5af3;
 }

 .content span.traitalias,
 .content a.traitalias,
 .block a.current.traitalias {
     color: #6841f1;
 }

 .content span.fn,
 .content a.fn,
 .block a.current.fn,
 .content span.method,
 .content a.method,
 .block a.current.method,
 .content span.tymethod,
 .content a.tymethod,
 .block a.current.tymethod,
 .content .fnname {
     color: #9a6e31;
 }

 .content span.keyword,
 .content a.keyword,
 .block a.current.keyword {
     color: #de5249;
 }

 pre.rust .comment {
     color: #8E908C;
 }

 pre.rust .doccomment {
     color: #4D4D4C;
 }

 nav:not(.sidebar) {
     border-bottom-color: #e0e0e0;
 }

 nav.main .current {
     border-top-color: #000;
     border-bottom-color: #000;
 }

 nav.main .separator {
     border: 1px solid #000;
 }

 a {
     color: #66c;
 }

 .docblock:not(.type-decl) a:not(.srclink):not(.test-arrow),
 .docblock-short a:not(.srclink):not(.test-arrow),
 .stability a {
     color: #3873AD;
 }

 .stab.internal a {
     color: #304FFE;
 }

 a.test-arrow {
     color: #f5f5f5;
 }

 .collapse-toggle {
     color: #999;
 }

 #crate-search {
     color: #555;
     background-color: white;
     border-color: #e0e0e0;
     box-shadow: 0 0 0 1px #e0e0e0, 0 0 0 2px transparent;
 }

 .search-input {
     color: #555;
     background-color: white;
     box-shadow: 0 0 0 1px #e0e0e0, 0 0 0 2px transparent;
 }

 .search-input:focus {
     border-color: #66afe9;
 }

 .search-focus:disabled {
     background-color: #e6e6e6;
 }

 #crate-search+.search-input:focus {
     box-shadow: 0 0 8px #078dd8;
 }

 .module-item .stab {
     color: #000;
 }

 .stab.unstable {
     background: #FFF5D6;
     border-color: #FFC600;
 }

 .stab.internal {
     background: #FFB9B3;
     border-color: #B71C1C;
 }

 .stab.deprecated {
     background: #F3DFFF;
     border-color: #7F0087;
 }

 .stab.portability {
     background: #C4ECFF;
     border-color: #7BA5DB;
 }

 .stab.portability>code {
     color: #000;
 }

 #help>div {
     background: #e9e9e9;
     border-color: #bfbfbf;
 }

 .since {
     color: grey;
 }

 tr.result span.primitive::after,
 tr.result span.keyword::after {
     color: black;
 }

 .line-numbers :target {
     background-color: transparent;
 }

 pre.rust .kw {
     color: #8959A8;
 }

 pre.rust .kw-2,
 pre.rust .prelude-ty {
     color: #4271AE;
 }

 pre.rust .number,
 pre.rust .string {
     color: #718C00;
 }

 pre.rust .self,
 pre.rust .bool-val,
 pre.rust .prelude-val,
 pre.rust .attribute,
 pre.rust .attribute .ident {
     color: #C82829;
 }

 pre.rust .macro,
 pre.rust .macro-nonterminal {
     color: #3E999F;
 }

 pre.rust .lifetime {
     color: #B76514;
 }

 pre.rust .question-mark {
     color: #ff9011;
 }

 .example-wrap>pre.line-number {
     border-color: #c7c7c7;
 }

 a.test-arrow {
     background-color: rgba(78, 139, 202, 0.2);
 }

 a.test-arrow:hover {
     background-color: #4e8bca;
 }

 .toggle-label {
     color: #999;
 }

 :target>code,
 :target>.in-band {
     background: #FDFFD3;
 }

 pre.compile_fail {
     border-left: 2px solid rgba(255, 0, 0, .4);
 }

 pre.compile_fail:hover,
 .information:hover+pre.compile_fail {
     border-left: 2px solid #f00;
 }

 pre.ignore {
     border-left: 2px solid rgba(255, 142, 0, .4);
 }

 pre.ignore:hover,
 .information:hover+pre.ignore {
     border-left: 2px solid #ff9200;
 }

 .tooltip.compile_fail {
     color: rgba(255, 0, 0, .3);
 }

 .information>.compile_fail:hover {
     color: #f00;
 }

 .tooltip.ignore {
     color: rgba(255, 142, 0, .3);
 }

 .information>.ignore:hover {
     color: rgba(255, 142, 0, 1);
 }

 .search-failed a {
     color: #0089ff;
 }

 .tooltip .tooltiptext {
     background-color: black;
     color: #fff;
 }

 .tooltip .tooltiptext::after {
     border-color: transparent black transparent transparent;
 }

 .important-traits .tooltip .tooltiptext {
     background-color: white;
     color: black;
     border-color: black;
 }

 #titles>div:not(.selected) {
     background-color: #e6e6e6;
     border-top-color: #e6e6e6;
 }

 #titles>div:hover,
 #titles>div.selected {
     border-top-color: #0089ff;
 }

 #titles>div>div.count {
     color: #888;
 }

 .modal {
     background-color: rgba(0, 0, 0, 0.3);
 }

 .modal-content {
     background-color: #eee;
     border-color: #999;
 }

 .modal-content>.close {
     background-color: #eee;
     border-color: #999;
 }

 .modal-content>.close:hover {
     background-color: #ff1f1f;
     color: white;
 }

 .modal-content>.whiter {
     background-color: #eee;
 }

 .modal-content>.close:hover+.whiter {
     background-color: #ff1f1f;
 }

 @media (max-width:700px) {
     .sidebar-menu {
         background-color: #F1F1F1;
         border-bottom-color: #e0e0e0;
         border-right-color: #e0e0e0;
     }

     .sidebar-elems {
         background-color: #F1F1F1;
         border-right-color: #000;
     }

     #sidebar-filler {
         background-color: #F1F1F1;
         border-bottom-color: #e0e0e0;
     }
 }

 kbd {
     color: #000;
     background-color: #fafbfc;
     border-color: #d1d5da;
     border-bottom-color: #c6cbd1;
     box-shadow-color: #c6cbd1;
 }

 #theme-picker,
 #settings-menu {
     border-color: #e0e0e0;
     background-color: #f0f0f080;
 }

 #theme-picker:hover,
 #theme-picker:focus,
 #settings-menu:hover,
 #settings-menu:focus {
     border-color: #717171;
 }

 #theme-choices {
     border-color: #ccc;
     background-color: #fff;
 }

 #theme-choices>button:not(:first-child) {
     border-top-color: #e0e0e0;
 }

 #theme-choices>button:hover,
 #theme-choices>button:focus {
     background-color: #eee;
 }

 @media (max-width:700px) {
     #theme-picker {
         background: #fff;
     }
 }

 #all-types {
     background-color: #fff;
 }

 #all-types:hover {
     background-color: #f9f9f9;
 }

 .search-results td span.alias {
     color: #000;
 }

 .search-results td span.grey {
     color: #999;
 }

 #sidebar-toggle {
     background-color: #F1F1F1;
 }

 #sidebar-toggle:hover {
     background-color: #E0E0E0;
 }

 #source-sidebar {
     background-color: #F1F1F1;
 }

 #source-sidebar>.title {
     border-bottom-color: #ccc;
 }

 div.files>a:hover,
 div.name:hover {
     background-color: #E0E0E0;
 }

 div.files>.selected {
     background-color: #fff;
 }

 .setting-line>.title {
     border-bottom-color: #D5D5D5;
 }