How to change the toolbar icon using stylish in firefox? about turbo-download-manager HOT 3 CLOSED

What is the problem with the current icon? Can you provide an screenshot

from turbo-download-manager.

The current icon is 18px * 18px, but displayed as 16px * 16px.
I using the css below to make it 18px

.toolbarbutton-icon[label="Turbo Download Manager"] {
    min-width: 18px;
    height: 18px;
}

Before(16px):

After(18px):

from turbo-download-manager.

https://developer.mozilla.org/en-US/Firefox/Australis_add-on_compat

internal icons on the navbar use 18px. For add-ons, by default the padding is set up so it should work well if add-ons specify an icon of size 16px.

I was hoping to get 18px for the icon, as we have progress meter and in 16px the progress meter does not look good.

I have done some experiments with 16px and here are the results:
16px:

18px:

32px (retina display):

36px (retina display):

I still think the current icon which is based on 18px looks better although Firefox squeezes the icon to 16px.

using the css below to make it 18px

Yes, if you resize the icon to 18px, you will get the best resolution.

from turbo-download-manager.