Playlist rows color of the even rows

[Bea84]

Hello!
Could someone please tell me if there is a way to set the slightly darker color of the even rows in the playlist? Some skins have it but on my two favorite ones the whole playlist background is white, and I liked it when every other row had darker background, made it prettier and easier to navigate.

I am currently with the skin iMac by Liberty, my other favorite is X-metal 2 - and the X-metal 2 used to have those rows in previous versions of AIMP.
Am I missing something? Please help!

Putting pictures in case I didn't explain it well enough - one of the pics has those darker background rows, and the other hasn't.

[Artem]

These colors are defined on skin side