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.logo-img path {
To expand on @gringo answer, the Javascript method described in other answers works, but requires the user to download unnecessary image files, and IMO, it bloats your code.
I think a better approach would be to to migrate all 1-color vector graphics to a webfont file. I've used Fort Awesome in the past, and it works great to combine your custom icons/images in SVG format, along with any 3rd party icons you may be using (Font Awesome, Bootstrap icons, etc.) into a single webfont file the user has to download. You can also customize it, so you only include the 3rd party icons you're using. This reduces the number of requests the page has to make, and you're overall page weight, especially if you're already including any 3rd party icons libraries.
If you prefer a more dev oriented option, you could Google "npm svg webfont", and use one of the node modules that's most appropriate for your environment.
Once, you've done either of those two options, then you could easily change the color via CSS, and most likely, you've sped up your site in the process.