Change in the new tab group Feature

I love the new tab groups, but there is a little problem. The colors are really ugly, and even if it might seem like something not-so-important, I’m literally considering go back to using Chrome just because of that. It could be a little dumb thing, but for some people it will determine if they choose using Brave or go back to Chrome.
Maybe adding more colors would improve it so much, or making them a somewhat prettier. I think all of them are too dark? Like there are no light colors. Chrome ones are more like pastel colors and it makes the tab more subtle.