Comments from forever theme in another theme

Hi!

I’m new to wordpress and all that has to do with it.

I’m quite used to designing and developing websites, but have never really worked with WordPress.

I’ve found a theme that i like, but i’m not that fond of the way the comments look. Then i found the Forever theme and fell in love with their approch on the comments style.

I’ve replaced the comments.php file with the one from forever theme and i’ve pasted the neccesery code in functions.php to make it not display any warnings.

Nut the comments still look like the old theme, is it just pure css that needs to be changed or have i missed some component?

Thanks in advance!