This often happens whenever there's some party who's present in an election, but gets zero seats in that election; it interchanges the colours with which the
other parties are displayed.
Please note that the "NLD Party" won zero seats.
I'm afraid nothing can be done about this phenomenon in general (especially since Wouter stopped working on the game a number of years ago);
but, if that party proceeds to either
A) get some visibility before the next election and therefore some seats in it,
or,
B) not log in for four days whereupon you can request their deactivation at
viewtopic.php?f=11&t=4447, then the colours should be back to normal next time.
... [investigates] ...Looks like the party in question has already deactivated, or been deactivated, between when you posted and now.
So next election should have the right colours.