How to handle transparency in Matplotlib plots | Scaler Topics
How to set Color for Markers in Scatter Plot in Matplotlib?
Blend transparency with color in 2D images — Matplotlib 3.7.0 documentation
How to Change the Transparency of a Graph Plot in Matplotlib with Python
3D Scatter transparency not activated by marker.color or marker.line.color as well as line.color and errorbars alpha channel · Issue #3492 · plotly/plotly.js · GitHub