I can see a row of LED’s that are a strange colour or slightly different to the rest of the LED's on that module

This issue indicates an IC Chip short circuit whereby it is likely that one of the IC legs has touched
another or become unseated by solder failure. This is more prominent immediately after
installation as transit and man handling could create this issue.
Remove the module in question and thoroughly clean the PCB to check if you are an
experienced installer otherwise remove the model and replace with a spare and return the
module for repair / replacement.