Something different : KCU founding club, Raumati Hearts were formed by a Scotsman who supported Heart of Midlothian
Is this advert filmed at Raumati Hearts? Their name is on the grandstand...
http://www.campaignbrief.com/nz/2017/04/lotto-nzs-...
No, that (a) doesn't look anything like Weka Park, which doesn't have a grandstand, and (b) you can see an Auckland train in the background. It's probably somewhere in South Auckland, although not any ground I've ever played on (maybe actually a rugby ground? Papakura?)
However, if memory serves, RHFC did play in maroon and gold (same colours as nearby Kapiti College).