I've always found shaders a bit complicated. In Unity, you write shader programs using the HLSL programming language. But this always seemed like a completely different world compared to everything else in Unity. I have learnt HLSL coding too but I wanted experiment with Unity's shader graph.
Here are some random ones I've implemented.
Heres what it looks like
It blends in two colors and adds in a given density of stars(using the Voronoi node).
See more gifs for this here.
Heres what it looks like.