Of course, but that’s outside the realm of this article, and the provided shader is intended only as a proof of concept, not as a final asset. I would suggest you find some tutorials on writing shaders for Unity’s Shader Lab to figure out how to add a tint color.

I’m a fan of Alan Zucconi’s tutorials on the topic as a good place for people to start, though if you search the internet or Unity’s shader forums you can find many more resources.

https://www.alanzucconi.com/2015/06/10/a-gentle-introduction-to-shaders-in-unity3d/