Why the forcing of the blue background?

I like to use a light yellow background for my private replies, but in your plugin’s CSS you have

.topic .bbp-private-reply {
background: #78C0EC!important;
}

I’m curious as to why, and wondering if you could take out the important flag so that I can more easily style my own background without having to edit the plugin style file everytime I upgrade.

https://www.ads-software.com/plugins/bbpress-private-replies/