Overtone hair color

Has anyone used overtone? I have naturally golden blonde hair and want a color that won’t last very long and basically washes out. They never give a straight answer on their website about how long it lasts.

I really like my natural hair color but haven’t done anything in YEARS so I wanted to have some regret free fun lol. I was thinking their chocolate brown shade? Color doesn’t tend to hold well in my hair but I don’t know how well this would work.