There are some customisation options available for hierarchical funnels to make them more bespoke.
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Colour Selection

Firstly the base colour can be changed by clicking on its colour - this will open up the colour picker.

There is also the option to highlight a block. This will give the selected metric block a grey colour. 

To do this click on the plus button on the desired metric - this will open up more options. Then under 'Block Type' click the 'Highlight' option.

​Unit Formatting

The "Full" option will display the entire number with commas to seperate the thousands.

The "Formatted" option will round the metric value to the nearest base unit selected. For example to the nearest thousand, million or billion. If "none" is selected the app will recognise the most sensible base unit to round to. These can be selected in the "Base Unit" dropdown:

Furthermore, you can select the number of decimal places you would like to round to and the type of rounding - soft or hard.

Soft rounding (recommended) rounds a value up to the number of decimal places selected.
Hard rounding performs a string truncation on the number.