Give it a dark background, you'll see a change within a day. My jardini was really gold and dark when I had a dark background. When I moved it to a bigger tank with no background, it went light within a few hours.
Both Jardinis and leis are Australian... But on closer inspection it does kinda... look like a lei? But it also looks like a jardini... I'm not good at discerning the two.
Jars change colours pretty fast depending on their background, I've seen a couple that look like that at my lfs as well. It'll turn darker as soon as it goes in a darker tank.