Blessfulled Damage Indicators: Addons & Integrations expands upon the customizability of Blessfulled, letting you define popup colours for any damage type - it's inner and outline colours.
Besides that, it adds a few neat functions like defining custom expressions for each damage type, customizing the chances for them firing (also adding customizable chances to the native expressions of Blessfulled), adds toggleable options to show damage popups for all damage sources, not just from the players, along with an option to accumulate damage into a single popup (over a customizable amount of time, it also accumulates per damage type, so it doesn't just combine all damage into one popup).
It also makes apothic attribute's crit hits registerable as criticals for both Blessfulled and the Heavier Weapons mod.
All those integrations are optional and will not do anything if a mod is absent.
Everything is configurable and further explained in the configs: blessfulledaddons-common.toml & blessfulledaddons-client.toml.
TL;DR:
Features include:
Currently, there is built in, predefined support for Iron’s Spells ’n Spellbooks, Travel Optics, Apothic Attributes, Geomancy Plus, Ice and Fire, Cataclysm, Cataclysm Spellbooks, and Alex’s Caves. If you don't like the predefined settings you can change them tho.