Improve how the logo looks on dark backgrounds
Adjusted the front card color of the dark-background logo so it no longer reads as a heavy black slab against the app's dark theme.
The dark-background logo had a solid black front card that looked like a heavy black slab on the app's dark theme. The front card color was adjusted to sit slightly above the background darkness so it reads as a distinct surface.
The red and white colors, the Q glyph, and the transparent background are unchanged—only the color was adjusted.


