Change color of SVG sprite

I am using SVG sprite as my background image:

.naar-logo {
    background: url(images/salt_sprite.svg) no-repeat -8px -78px;
    width: 36px;
    height: 49px;
    position: relative;
    top: 38px;
}
<div class="naar-logo"></div>

Color of sprite images is black, but I want it to be white. I tried with:

background: url(images/salt_sprite.svg) no-repeat white -8px -78px;

and color: white; on .naar-logo clas, but it not work. How can I change color of svg sprite to be white?