index=vsdm_p host = vgmm13zw.internal.vodafone.com OR host = vgmm14zw.internal.vodafone.com source="Perfmon:FreeDiskSpace" |table host, counter, instance, Value | where instance!="_Total" | where counter="Free Megabytes" | eval Value_g = Value/1000 | fields host, instance, Value_g
I would recommend downloading the "Splunk 6.x Dashboard Examples". Within this app, there are samples of each type of dashboard/visualization available - including Table Cell Highlighting - which guides you on how to do this successfully. Here's the link on splunkbase:
See if this answer helps you https://answers.splunk.com/answers/83206/color-in-a-table-based-on-values.html