This is a common error received during deployments:

Error: Metric, gauge, or table dashboard component missing indicatorLowColor attribute (line 70, column 33)

This is a suggestion to Gearset team for there feature Deployment analysis if they would pick this error in advance before deployment.

Observation: This issue occurs when the Dashboard is created in Lightning. (I cannot confirm though)

Resolution:

Downloaded package.xml and component

Basically, after I pulled the dashboard metadata from source org, I opened it and found the
<componentType>Table</componentType> tag, and right under it I added this:

<indicatorHighColor>#00716B</indicatorHighColor>
<indicatorMiddleColor>#ffb75d</indicatorMiddleColor>
<indicatorLowColor>#C23934</indicatorLowColor>

After this change I managed to deploy everything to my destination org, and everything seems to be working fine.

Hope this helps.

Thanks.