Overleaf/services/web/public/js/ace/theme/github.css

/* CSS style content from github's default pygments highlighter template.
   Cursor and selection styles from textmate.css. */
.ace-github .ace_gutter {
  background: #e8e8e8;
  color: #AAA;
}

.ace-github  {
  background: #fff;
  color: #000;
}

.ace-github .ace_keyword {
  font-weight: bold;
}

.ace-github .ace_string {
  color: #D14;
}

.ace-github .ace_variable.ace_class {
  color: teal;
}

.ace-github .ace_constant.ace_numeric {
  color: #099;
}

.ace-github .ace_constant.ace_buildin {
  color: #0086B3;
}

.ace-github .ace_support.ace_function {
  color: #0086B3;
}

.ace-github .ace_comment {
  color: #998;
  font-style: italic;
}

.ace-github .ace_variable.ace_language  {
  color: #0086B3;
}

.ace-github .ace_paren {
  font-weight: bold;
}

.ace-github .ace_boolean {
  font-weight: bold;
}

.ace-github .ace_string.ace_regexp {
  color: #009926;
  font-weight: normal;
}

.ace-github .ace_variable.ace_instance {
  color: teal;
}

.ace-github .ace_constant.ace_language {
  font-weight: bold;
}

.ace-github .ace_cursor {
  color: black;
}

.ace-github .ace_marker-layer .ace_active-line {
  background: rgb(255, 255, 204);
}

.ace-github .ace_marker-layer .ace_selection {
  background: rgb(181, 213, 255);
}

.ace-github.ace_multiselect .ace_selection.ace_start {
  box-shadow: 0 0 3px 0px white;
  border-radius: 2px;
}
/* bold keywords cause cursor issues for some fonts */
/* this disables bold style for editor and keeps for static highlighter */
.ace-github.ace_nobold .ace_line > span {
    font-weight: normal !important;
}

.ace-github .ace_marker-layer .ace_step {
  background: rgb(252, 255, 0);
}

.ace-github .ace_marker-layer .ace_stack {
  background: rgb(164, 229, 101);
}

.ace-github .ace_marker-layer .ace_bracket {
  margin: -1px 0 0 -1px;
  border: 1px solid rgb(192, 192, 192);
}

.ace-github .ace_gutter-active-line {
    background-color : rgba(0, 0, 0, 0.07);
}

.ace-github .ace_marker-layer .ace_selected-word {
  background: rgb(250, 250, 255);
  border: 1px solid rgb(200, 200, 250);

}

.ace-github .ace_print-margin {
  width: 1px;
  background: #e8e8e8;
}

.ace-github .ace_indent-guide {
  background: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAACCAYAAACZgbYnAAAAE0lEQVQImWP4////f4bLly//BwAmVgd1/w11/gAAAABJRU5ErkJggg==") right repeat-y;
}