programmatic manipulation of styles (attributes.style) derrived from block supports features

[wwdes]

This is just a general question aimed to increase my understanding of the API.

When a user interacts with a block's controls that are provided via the Block Supports API, updates to the block are made automatically and there is no need to handle it within the blocks edit function.

What if I want to keep using the controls that are provided by the Block Supports API but manipulate the values before changes are rendered? Is there a good way to do it and should I do it?