Agreed on point A, that's the first thing I noticed. For better or worse, the red-white-blue (with the specific shades thereof) is a core part of USPS's brand,

Agreed on point A, that's the first thing I noticed. For better or worse, the red-white-blue (with the specific shades thereof) is a core part of USPS's brand, and is instantly recognizable for most people in this country. To not use that is IMO a huge opportunity lost.