A metric-like visualization, that changes colors according to numbers. For more information: https://deanf.me/2016/06/10/kibana-the-way-you-want-it/
For Kibana 4:
bin/kibana plugin -i health_metric_vis -u https://github.com/DeanF/health_metric_vis/releases/download/v0.3.1/health_metric_vis-0.3.1.zip
For Kibana 5:
kibana-plugin install https://github.com/DeanF/health_metric_vis/releases/download/v0.3.5/health_metric_vis-${KIBANA_VERSION}.zip