Custom styles for JSONView (https://chrome.google.com/webstore/detail/chklaanhfefbnpoihckbnefhakgolnmc)

JSONView Custom Styles.css

body {
  white-space: pre;
  font-family: monospace;
  background:#222;
  color: wheat;
}

a {
  color: goldenrod;
}

.property {
  font-weight: bold;
  color:gold;
}

.property:after {
  content: '" ';
}

.property:before {
  content: '"';
}

.type-null {
  color: darkgray;
}

.type-boolean {
  color: orange;
}

.type-number {
  color: yellow;
}

.type-string {
  color: PapayaWhip ;
}

.callback-function {
  color: gray;
}

.collapser:after {
  content: "-";
}

.collapsed > .collapser:after {
  content: "+";
}

.ellipsis:after {
  content: " … ";
}

.collapsible {
  margin-left: 2em;
}

.hoverable {
  padding-top: 1px;
  padding-bottom: 1px;
  padding-left: 2px;
  padding-right: 2px;
  border-radius: 2px;
}

.hovered {
  background-color: rgba(90, 90, 90, 1);  
}

.collapser {
  padding-right: 6px;
  padding-left: 6px;
}