Japan's Ministry turned the dam into MCZ colors.

The Ministry of Land, Infrastructure, Transport and Tourism, a national organization, has started an event to light up a nearby dam in four colors to support the live performance of MCZ next month at Toyama.

-It is published in the local tourist information Twitter.

ももクロ色にライトアップ　宇奈月ダム 【全文はこちら https://t.co/clY7XZXOwR 】

— 北陸新幹線で行こう！ 北陸・信越観光ナビ (@kankounavi) 2019年3月21日

This dam's name is 'Unazuki Dam'.
It is about 20 minutes by car from the spring live venue (Miyano Sports Park).