Change Folder Icon in Dolphin/KVantum

I am using Dolphin with KVantum. As it is, the folder icons vary, showing a representation of the contents. I want the icon to just be solid blue, like the Animation folder in the screenshot. I looked in the KVantum manager, didn't see anything.

How do I do this?

~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.2 LTS
Release: 20.04
Codename: focal 

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