The United Nations Postal Administration has issued a colorful series of postage stamps promoting equality for lesbian, gay, bisexual and transgender people.

The stamps were unveiled Thursday at a ceremony in New York City that included a performance by the New York Gay Men's Chorus.

The stamps were designed by UNPA art director Sergio Baradat. According to the AP, Baradat's stamps are the first issued by the UN's post office with an LGBT theme.

“We need to change attitudes to one of acceptance,” Stephen Cutts, UN Assistant Secretary-General for the Department of Management, is quoted as saying by the AP.

Launched in 2013, the UN's human rights office's Free & Equal campaign promotes LGBT rights worldwide. The stamps will support the campaign.