insomnia/app/ui/css/editor/theme.less

/* Based on Sublime Text's Monokai theme */
.editor {
  .CodeMirror {
    color: var(--color-font);
  }

  .CodeMirror-selected {
    background: var(--color-font);
    opacity: 0.2;
  }

  .CodeMirror-gutters {
    border-right: 0;
  }

  .CodeMirror-guttermarker {
    color: var(--color-font);
  }

  .CodeMirror-guttermarker-subtle {
    color: var(--hl-lg);
  }

  .CodeMirror-linenumber {
    color: var(--hl);
  }

  .CodeMirror-cursor {
    border-left: 1px solid var(--color-font);
  }

  .cm-animate-fat-cursor,
  &.cm-fat-cursor .CodeMirror-cursor {
    background-color: rgba(255, 139, 147, 0.5) !important;
    border-bottom: 2px solid #d60000 !important;
    box-sizing: border-box;
  }

  .cm-meta,
  .cm-qualifier {
    color: var(--color-font);
  }

  .cm-atom {
    color: var(--color-surprise);
  }

  .cm-number {
    color: var(--color-surprise);
  }

  .cm-keyword {
    color: var(--color-danger);
  }

  .cm-builtin {
    color: var(--color-info);
  }

  .cm-string {
    color: var(--color-notice);
  }

  .cm-property, .cm-attribute {
    color: var(--color-success);
  }

  .cm-variable {
    color: var(--color-font);
  }

  .cm-variable-2 {
    color: var(--color-info);
  }

  .cm-variable-3 {
    color: var(--color-surprise);
  }

  .cm-def {
    color: var(--color-warning);
  }

  .cm-bracket {
    color: var(--color-font);
  }

  .cm-tag {
    color: var(--color-danger);
  }

  .cm-header {
    color: var(--color-surprise);
  }

  .cm-link {
    color: var(--color-surprise);
  }

  .cm-comment {
    color: var(--hl);
  }

  .cm-error {
    background: var(--color-danger);
    color: var(--color-font-danger);
  }

  .cm-clickable {
    text-decoration: underline;
    cursor: pointer;
  }

  .cm-clickable:hover {
    text-decoration: underline;
  }

  .CodeMirror-matchingbracket {
    color: inherit !important;
    text-decoration: underline;
    text-decoration-color: var(--color-notice);
    box-sizing: border-box;
  }

  .cm-nunjucks-variable {
    color: var(--color-surprise);
  }

  .cm-nunjucks-tag {
    color: var(--color-info);
  }

  .cm-nunjucks-comment {
    color: var(--hl);
  }
}