How do I change the fill color of svg file in pixate framework

Question

i'm working on a iOS 7 project, iPhone Retina(4-inch), where I have an UIButton. I'm using Pixate framework 2.0.1 for styling my UI component. I have added a user defined runtime attribute to my UIButton, key path: 'styleId' type: string value: 'big-magnify-btn'

In my default.css I have defined the following.

big-magnify-btn {

background-image: url(button-scan.svg); }
/* Black magnify image */

When I run my application the button shows up in black, how do I do if I want to change the fill color in my default.css class #big-magnify-btn ???? I want my image in a different color.

All kind of help is appreciated

Here is the button-scan.svg https://www.dropbox.com/s/ks1vym66bfjwbtw/button-scan.svg