Base color is crust/mantle instead of base

The base background color is not base, making gitea appears way darker than other website.
Here is macchiato pink in gitea:
<img width="1728" alt="Image" src="https://github.com/user-attachments/assets/a2890a34-2bd6-4595-b182-b711f13aa26a" />

Here is macchiato pink in github:
<img width="1728" alt="Image" src="https://github.com/user-attachments/assets/dc6bb148-5112-45fb-a663-86d299c49544" />