$http.post('http://localhost:8529/_api/cursor', {
  query: `
    FOR doc IN collection
    FILTER doc.color = @color
    RETURN doc
  `,
  bindVars: {color: 'blue'}
})
.then(successCallback);

var aql = arangojs.aql;
var color = 'blue';
$http.post('http://localhost:8529/_api/cursor', aql`
  FOR doc IN collection
  FILTER doc.color = ${color}
  RETURN doc
`)
.then(successCallback);