Undo items highlight group not working

[sebiwi]

Hello,

I'm using this Solarized colorscheme with LazyVim which includes Noice for notifications. I see that the "undo items" (e.g. x changes; after #17) notifications appear at the bottom right, instead of on a notification popup which is perfect. The issue is that the highlighting is wrong:

I asked the maintainer and he told me that I should see if Noice hace a winblend option so I can modify this, but I didn't find anything in the documentation.

Does this option exist? Is there anything else I should do?