Transparent sheets presented by Tableau Software in 2018.3 release opened new opportunities for dashboard designing.
The Ultimate Cheat Sheet on Tableau Charts
Help Online - Origin Help - Bar Chart
How to Create a Bar Chart Visualizations
Using Gradient Colors in Tableau - The Flerlage Twins: Analytics
Bar graph reporting - can tableau create a bar mark, have it
Improved Stacked Bar Charts with Tableau Set Actions - Canonicalized
How to add transparent to the color legend
Using Custom Shapes and Polygons to draw anything from Directed
Interactive Highlight Tables/Heatmaps with Tableau Set Actions
How to Create an Effective Bar Chart in Tableau - GeeksforGeeks
Tableau Tip Tuesday: How to Create Grouped Bar Charts
The Data School - How to create a Butterfly Chart / Diverging Bar