Hello, We can confirm this is a bug, but it is not present in the Lite/free Plugin version. For the Lite Plugin version, changing series colors is still working without any issue. Just a couple of example screenshots :
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So, this bug is only found in the latest premium wpDataTables, version 6.7.1. Our developers isolated the bug, and they’ll add it to their queue for fixing.
They will do their best to build a fix as soon as possible.
We don’t have an ETA on when the fix will be available, but please keep a lookout on our wpDataTables changeLog.
It will be stated there during updates which bug fixes have been implemented at each update.
Please note, this Forum is only made to provide support for the Lite/free Plugin version, so if you have any additional questions about this bug, or any other premium options/features/issues, please open?a ticket on our Main(premium) support here and one of our Agents can advise. If your licence has expired, you can open a?pre-purchase ticket?which doesn’t require a purchase code.
Premium products are not supported in these forums, as per this comment by www.remarpro.com moderators.