Change the color of an achievement category when you complete everything

[fossil skiff]

It would be easier to see what ones you fully completed and probably look nicer, example in screenshot sorta

[acoustic frigate]

I agree it would be nice to have a UI indicator - or maybe "minimize" them or show / instead of the categorical numbers - but your color selection isn't good for people who suffer from certain types of colorblindness. I cannot see any differences in the color bars except for a slight deformation on them where I'm assuming you made custom edits.

[hollow verge]

Maybe some sort of gold colour that has a neat metallic animated sheen to it.

[kind wagon]

maybe just some just after the name , or before the numbers, could be pretty simple to add

[lone leaf]

I would personally say I don't need another color on these, but if we say there should be one on 100% completion, I would personally keep the gold color for the very end and implement another line of color before gold instead.

[orchid anvil]

Maybe it would be easy to tell if not the color of the achievment tab itself would change but rather the color of the brown box around it?

[reef void]

Or that number progress (for example 62/62) can be replaced with something like COMPLETED, so you don't need to look at it ever again.

[acoustic frigate]

or * / * , or just *

[steep moth]

I agree with this

[frozen ingot]

+1 Thats annoying how its now.

[vast valve]

You don't need to look at it ever again..unless there are more achievements added to that category like happened this update.

About colours, yeah, maybe change into different colours when the category is fully completed

[rare otter]

It would also be helpful if completed categories are dropped to the bottom, maybe with a nice separator to the uncompleted ones. That way I don't have to scroll past them or continue scrolling after a point.
It would also help with categories that get expanded, as they'd jump up again.