Checkvist feels good CSS theme

checkvist-feels-good-at-night.css

/* https://www.color-hex.com/color-palette/36646 */

html, body, .main_div {
	background: #4b5162;
	background: #282A36;
	background: #3b3d4a;
  color: #e5e5e5;
  color: #F8F8F2;
}

.topbarDiv,
.toolbarDiv,
.toolBar {
	background: #404552;
  background: #20222b;
  background: #2f313b;
}

.toolbarDiv,
.toolBar {
	border-bottom: none;
}

.toolBar {
	text-shadow: none;
}

a.topbar__navLink, a.topbar__navLink:visited, a.topbar__navLink:hover, a.topbar__navLink:active,
.toolBar a,
.toolBar a.printer, .toolBar a#viewOptionsLink, .toolBar .expandCollapse {
	color: #fff;
}

img.logoImg {
	background: #fff;
  padding: 5px;
  margin: -5px;
  border-radius: 16px;
}

.list-h1 {
	text-shadow: none;
}

div.coreDiv.selectedTask, ul.comments li.comment.selectedTask div.coreNote,
.selectedTask_focus > div.coreDiv, li.comment.selectedTask_focus div.coreNote, li.upload.selectedTask_focus {
  background: #5294e21c;
  border-color: #5294e2;
}

.color_fg1, span.fg1 .userContent, span.fg1 .userContent a, span.fg1 .userContent a:visited {
	color: #ffa09e;
}

.color_fg2, span.fg2 .userContent, span.fg2 .userContent a, span.fg2 .userContent a:visited {
	color: #a0b7ca;
}

.color_fg3, span.fg3 .userContent, span.fg3 .userContent a, span.fg3 .userContent a:visited {
	color: #779bb7;
	color: #6272A4;
}

span.bg3 {
  background: #7c818c;
  color: #f3f3f3;
}

.text_input {
  background: #05263f;
  border-color: #00080e;
  color: #fff;
}

.singleLineForm button.submit, .singleLineForm a.editor_cancel {
  background: #05263f;
  border-color: #00080e;
}

.infoMessage {
  color: #555;
}

.userContent a, .userContent a:visited {
	color: #a8d0ff;
}

ul.comments {
	background: #383c4a;
}

li.comment,
li.comment:first-of-type {
	border-color: #3b3d4a;
}

.userContent strong {
	color: #fff;
}

span.fg1 .userContent strong,
span.fg1 .userContent a strong,
span.fg1 .userContent a:visited strong {
	color: #ff8f8d;
}

span.fg2 .userContent strong,
span.fg2 .userContent a strong,
span.fg2 .userContent a:visited strong {
	color: #b4dcfd;
}

span.fg3 .userContent strong,
span.fg3 .userContent a strong,
span.fg3 .userContent a:visited strong {
	color: #73b0e0;
}

span.bg1 .userContent strong,
span.bg1 .userContent a strong,
span.bg1 .userContent a:visited strong {
	color: #9297a2;
}

.taskContent em {
	opacity: 0.7;
}

span.fg1 .userContent.task_closed,
span.fg2 .userContent.task_closed,
span.fg3 .userContent.task_closed,
span.fg1 .userContent.task_closed strong,
span.fg2 .userContent.task_closed strong,
span.fg3 .userContent.task_closed strong,
span.fg1 .userContent.task_closed a strong,
span.fg2 .userContent.task_closed a strong,
span.fg3 .userContent.task_closed a strong,
span.fg1 .userContent.task_closed a:visited strong,
span.fg2 .userContent.task_closed a:visited strong,
span.fg3 .userContent.task_closed a:visited strong,
span.task_closed {
	color: #7c818c;
}

span.bg1 .userContent.task_closed,
span.bg1 .userContent.task_closed strong,
span.bg1 .userContent.task_closed a strong,
span.bg1 .userContent.task_closed a:visited strong {
	color: #6c6e73;  
}

.userContent.task_closed strong {
  color: #7c818c;
	font-weight: 400;
}

/* 2019-02-26 update */

.toolBar {
	color: #fff;
}

.verticalGuide,
.verticalGuide__selected {
	opacity: 0;
}

ul.topLevel {
	padding-left: 20px;
}

.cl_content,
.leftColumnNav,
.kbdShortcuts,
.kbdShortcuts td {
	background: #5c616f;
}

.leftColumnNav ul li,
.kbdShortcuts td {
	border-color: #3b3d4a;
}

.kbdShortcuts {
	text-shadow: none;
}

.additionalText, ul.checklists li.list_item, #archivedListSection .checklistName a,
.progressCounterText,
.menuPopupList li a, .menuPopupList li a:visited {
	color: #fff;
}

.tagClass_0, a.tagClass_0 {
  background-color: #0980f4;
  border-color: #0980f4;
  color: #fff;
  padding: 1px 6px;
}

.suggestionBox {
  color: #444;
}

div.hrDivider {
  background: #505050;
  background: rgba(255, 255, 255, 0.2);
}


.bg1.editable,
.bg2.editable,
.bg3.editable,
.bg7.editable {
  text-align: center;
}

.bg1.editable .taskContent::after,
.bg2.editable .taskContent::after,
.bg3.editable .taskContent::after,
.bg7.editable .taskContent::after {
  background: #505050;
  content: '';
  height: 1px;
  left: 0;
  position: absolute;
  top: 50%;
  width: 100%;
}

.bg1.editable .taskContent p,
.bg2.editable .taskContent p,
.bg3.editable .taskContent p,
.bg7.editable .taskContent p {
  background: #3b3d4a;
  border-radius: 3px;
  line-height: 20px;
  padding-left: 5px;
  padding-right: 5px;
  position: relative;
  z-index: 1;
}

.priority_4 .priorityColored,
.priority_4.priorityColored {
  background: none;
  color: #7c818c;
}

.priority_5 .priorityColored,
.priority_5.priorityColored {
  background: none;
  color: #ff8f8d;
}

.priority_6 .priorityColored,
.priority_6.priorityColored {
  background: none;
  color: #6c6e73;
}

.priority_7 .priorityColored,
.priority_7.priorityColored {
  background: none;
  color: #fff;
}

.priority_9 .priorityColored,
.priority_9.priorityColored {
  background: none;
  color: #FFD6A6;
}

checkvist-feels-good.css

/* Minimal font-size */

ul.topLevel ul li.task,
.text_input {
  font-size: 13px;
}



/* Hide form buttons */

.singleLineForm button.submit,
.singleLineForm a.editor_cancel {
  display: none;  
}

i.editHelp {
  display: none;  
}



/* Decrease task right margin */

div.coreDiv {
  margin-right: 30px;
}



/* Wide form */

.textareaWrapper {
  min-width: 80%;  
}

#task_content,
.text_input {
  width: 100%;
}



/* Maximum workarea height */

body {
  padding-bottom: 0;
}

#tasks_block {
  margin-bottom: 0;
}



/* Special colors for tasks */

.color_fg1, span.fg1 .userContent, span.fg1 .userContent a, span.fg1 .userContent a:visited {
	color: #ec4a21;
}

.color_fg2, span.fg2 .userContent, span.fg2 .userContent a, span.fg2 .userContent a:visited {
	color: #999;
}

.color_fg3, span.fg3 .userContent, span.fg3 .userContent a, span.fg3 .userContent a:visited {
	color: #cfcfcf;
}

span.bg3 {
  background: #f3f3f3;
  color: #777;
  padding-bottom: 6px;
  padding-top: 6px;
  margin-top: -4px;
  margin-bottom: -3px;
}

.selectedTask .bgMarker.bg3 {
  padding: 0;
  margin: 3px;
}

.pageFooter__inner {
	padding: 3px 10px;
}

.pageFooter__secondLine {
	display: none;
}

.tag {
	font-size: 10px;
}

.tagClass_0, a.tagClass_0 {
	background-color: #f7f7f7;
  border: 1px solid #f7f7f7;
  color: #75b2ec;
}



/* Special colors for toolbar */

.topbarDiv {
  background: #e7e9ef;
	overflow: auto;
}

.toolbarDiv,
.toolBar {
  background: #e7e9ef;
}

.toolBar span.bordered {
	display: none;
}

html, body, .main_div {
	background: #f8f8fa;
}

#ffContainer,
#ffContainer input {
	background: #f8f8fa;
}

.topbar {
  margin: 20px 0 10px;
}



/* Align node tags by right */

.editable, .editableList {
  align-items: baseline;
  display: flex;
}

span.node_text {
  flex-grow: 1;
}



/* Make comments flex too */

.editable.commentText {
  flex-flow: row wrap;
}

.editable.commentText hr {
  border-color: #858891;
  border-top: none;
  width: 100%;
}

.userContent ul, .userContent ol {
  margin-bottom: 4px;
  margin-top: 4px;
}



/* Hide author avatar in comments. Make comments more compact */

ul.comments {
  margin-left: 20px;
}

li.comment {
  padding: 0;
}

.authorPic {
  display: none;
}

div.coreNote {
  margin-left: 0;
  padding: 0;
}

.afterTask.notesFragment {
  white-space: nowrap;
}



/* Two-three columns display */

.content {
  max-width: none;
}

ul.topLevel.alighned {
  align-items: flex-start;
  display: flex;
  flex-flow: row wrap;
  justify-content: center;
}

ul.topLevel.alighned > li.task {
  margin-bottom: 48px;
  max-width: 900px;
  width: 50%;
}

@media(min-width: 1440px) {
  ul.topLevel.alighned > li.task {
    width: 33.33%;
  }
}



/* Special layout for first and second root nodes */

ul.topLevel.alighned > li.task:first-child {
  width: 33.33%;
  max-width: none;
}

ul.topLevel.alighned > li.task:first-child > ul.dndUl {
  opacity: 0.7;
}

ul.topLevel.alighned > li.task:nth-child(2) {
  width: 66.66%;
  max-width: none;
}

@media(min-width: 1440px) {
  ul.topLevel.alighned > li.task:first-child {
    width: 25%;
  }

  ul.topLevel.alighned > li.task:nth-child(2) {
    width: 75%;
  }
}



/* Special layout for second root node subnodes */

ul.topLevel.alighned > li.task:nth-child(2) > ul.dndUl {
  display: flex;
  flex-flow: row wrap;
}

ul.topLevel.alighned > li.task:nth-child(2) > ul.dndUl #task_content {
  width: 100% !important;
}

ul.topLevel.alighned > li.task:nth-child(2) > ul.dndUl > li.task {
  margin-bottom: 60px;
  width: 50%;
}

@media(min-width: 1440px) {
  ul.topLevel.alighned > li.task:nth-child(2) > ul.dndUl > li.task {
    width: 33.33%;
  }
}

ul.topLevel.alighned > li.task:nth-child(2) > ul.dndUl > li.task > ul.dndUl {
  opacity: 0.75;
}



/* Layout for rest root tasks */

ul.topLevel.alighned > li.task.hiddenByFilter,
ul.topLevel.alighned > li.task.hidden {
  display: none;
}

ul.topLevel.alighned > li.task > ul.dndUl {
  padding-left: 0;
}

ul.topLevel.alighned > li.task > div.coreDiv {
  background: rgba(0, 0, 0, 0.2);
  margin-left: -24px;
  margin-right: 40px;
  padding-left: 24px;
}

ul.topLevel.alighned > li.task > div.coreDiv div.nodeImage {
  display: none;
}

.toolbarDiv {
  margin-bottom: 10px;
  padding-bottom: 4px;  
}

.content {
  margin-top: -1px;
}

Install https://github.com/openstyles/stylus and add these stylesheets for https://checkvist.com domain