Depending on what you want to achieve it can be pretty straightforward. Can you elaborate and what it is you want to do? Do you have the SVG code or are you using an
<img ... tag to display it.
A little more info would help
Of course being a Graphic Designer if you created the SVG yourself could you not just create them in whatever colour you want? But. I'm certainly not a Graphic Designer so I'm not sure if this is achievable
You can however manipulate the SVG using CSS and that I am sure is achievable