Cambiar Color de Imagen PNG via CSS

Por curiosidad estuve buscando si existia la forma de con una imagen se podria cambiar sus colores con css, encontre lo siguiente:

Existe la funcion web-filter que te permite modificar la forma en que se muestra una imagen.

body {
    background-color:#03030a;
    min-width: 800px;
    min-height: 400px
}
img {
    width:20%;
    float:left; 
     margin:0;
}
/*Filter styles*/
.saturate {-webkit-filter: saturate(3);}
.grayscale {-webkit-filter: grayscale(100%);}
.contrast {-webkit-filter: contrast(160%);}
.brightness {-webkit-filter: brightness(0.25);}
.blur {-webkit-filter: blur(3px);}
.invert {-webkit-filter: invert(100%);}
.sepia {-webkit-filter: sepia(100%);}
.huerotate {-webkit-filter: hue-rotate(180deg);}
.rss.opacity {-webkit-filter: opacity(50%);}

<!--- img src http://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Mona_Lisa%2C_by_Leonardo_da_Vinci%2C_from_C2RMF_retouched.jpg/500px-Mona_Lisa%2C_by_Leonardo_da_Vinci%2C_from_C2RMF_retouched.jpg -->
<img alt="Mona Lisa" src="http://i.stack.imgur.com/OyP0g.jpg" title="original">
<img alt="Mona Lisa" src="http://i.stack.imgur.com/OyP0g.jpg" title="saturate" class="saturate">
<img alt="Mona Lisa" src="http://i.stack.imgur.com/OyP0g.jpg" title="grayscale" class="grayscale">
<img alt="Mona Lisa" src="http://i.stack.imgur.com/OyP0g.jpg" title="contrast" class="contrast">
<img alt="Mona Lisa" src="http://i.stack.imgur.com/OyP0g.jpg" title="brightness" class="brightness">
<img alt="Mona Lisa" src="http://i.stack.imgur.com/OyP0g.jpg" title="blur" class="blur">
<img alt="Mona Lisa" src="http://i.stack.imgur.com/OyP0g.jpg" title="invert" class="invert">
<img alt="Mona Lisa" src="http://i.stack.imgur.com/OyP0g.jpg" title="sepia" class="sepia">
<img alt="Mona Lisa" src="http://i.stack.imgur.com/OyP0g.jpg" title="huerotate" class="huerotate">
<img alt="Mona Lisa" src="http://i.stack.imgur.com/OyP0g.jpg" title="opacity" class="rss opacity">

Fuente del Ejemplo: http://codepen.io/rss/pen/ftnDd