The asset judged fastest
Icon Teardown
Your icon gets designed at 1024 pixels on a white artboard and decided on at about 64, in a row with 10 others. This is that row.
Why the icon and not the screenshots
The screenshots only get looked at by someone who already tapped through. The icon is what decides whether they tap — it is on the search result, the charts, the category page and the home screen, and it is read at a size most icons were never checked at.
Colour families are computed from the actual image pixels, not guessed. Pick an app above.