I am having the same issue as this ticket: https://tmsplugins.ticksy.com/ticket/990599/

However, updating the javascript file did not work for me.  Has there been a change that prevents this fix? 

Thank you.

I've changed the javascript file and then minified it and I've tried with the box checked and unchecked and nothing yet.  I will do more troubleshooting today.

I've found a #ffffff !important css tag on my odd and even rows and if I remove that it works.  I am going to try to find it.

Fixed my problem!  What I found out was that the color picker in the settings was adding an !important tag when it changed the color of the row.  What I did was cleared those selections and manually added the following in the custom css area.  Note it is the same css from what the color pickers would have implemented except I removed the !important tag.  This fixes my problem and now conditional formatting works.

.wpDataTablesWrapper table.wpDataTable tr.odd td {
background-color: #ffffff;
}

.wpDataTablesWrapper table.wpDataTable tr.even td {
background-color: #ffffff;
}