JSONView theme (https://chrome.google.com/webstore/detail/jsonview/chklaanhfefbnpoihckbnefhakgolnmc?hl=en)

gistfile1.txt

body {
  white-space: pre;
  font-family: monospace;
  background-color: rgb(45, 45, 100);
  color: rgb(200, 150, 100);
}

.property {
  font-weight: bold;
}

.type-null {
  color: gray;
}

.type-boolean {
  color: firebrick;
}

.type-number {
  color: lightblue;
}

.type-string {
  color: green;
}

.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: rgb(60, 60, 115);  
}

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