Which Discourse theme is being used in this forum? :)

Hi, We are from www.t4glabs.org. We are a small non profit in India that helps other non profits to use technology confidently and effortlessly to amplify their impact. We are putting together a discourse forum and loved the theme and settings used here on this forum. Is there someway to recreate this for our forum?

Any help from obsidian team/members would be very helpful.