Thank you for the incredible visual updates! Here are a few issues I noticed.
The Closed Turbines are treated as upgrades to the Open Turbines, when they should have their own set of levels. The same issue is present for Combustion Chambers and Boilers
The recipe and ghost item selection for Pipe 2 (Plastic) is still red
Some items lack the level symbols (labs, thermal tanks, etc.) (unsure if intentional)
Sterling Engine incorrectly have pipe connections, and these connections can be seen through an engine below.
Electric furnaces have an pipe connection even when the recipe uses no fluid.
The mod settings don't allow you to change rarity colors like Bob and Angel Reskins do (I imagine this is a future feature)
Thanks a ton!

Some of these issues are a result of using Artisanal Reskins: Bob's Mods (it is not intended to be used with Nullius, but I know that people do, and Artisanal Reskins: Nullius doesn't have full feature coverage as yet).

The rest though are in work; custom colors should work (you're looking for the setting under Artisanal Reskins: Framework, not Artisanal Reskins: Library; at some point Bobs/Angels/etc will be migrated to use Framework).