Custom icons cannot change color and the overlay svg color is still black

[Cocoa-C]

My situation is summarized as follows:

I've upgraded @nuxt/icon to 2.0.0, and the SVG file doesn't have a hard-coded fill. I'm using the <Icon :name="icon:xxx" /> method to call the local SVG. I'm using .icon { color: var(--neutral); } to control the color, but the icon is still always black.