Cosmetic: Tab Icons pixelated

Hey Liam;

Here a baby cosmetic, i see the tab icons are a bit pixelated.

For example Iv compared with shell32 original update-icon.

The pixelated ones:

The original 16x icon:

Pixelation results by resizing.

May change with clearer ones?

(Like the original 16x Icon of WU)

Would be nice.