Hi Mark,
It is indeed about the 'enhanced datatable - pivot table' from Fabien Baligand. However, the issue is more general I think. When a field formatter is applied via the index pattern you can only apply one. In this case I'd like to have only 2 decimals behind the decimal point and want to apply the color ranges. This is I think a general issue which has nothing to do with a plug-in as in every visualisation can have this issue I think. If there is a workaround for this, please let us know!
The same question has been asked at least 2 times more, one is about how to modify the color formatter to have the rounding in there: Modification of Color field formatter