Change D's brand color to blue.

[James Lu]

As we know, D has a branding problem. I suggest a small step 
towards fixing that branding problem, namely changing D's brand 
color to a shade of blue.

Red is associated with excitement, danger, anger, and action. 
Danger and anger and excitement are not positive qualities of a 
systems programming language. They amplify the primal fear some 
people have of GC. In contrast, blue reflects stability, harmony, 
and trust. These are all qualities we like in a systems 
programming language. In other words, blue triggers emotions that 
should be associated with systems programming language, which is 
what D desires to be.

Go, C, and C++ all use blue. Rust's logo is black, and the rest 
of its website is an even mix of the rainbow.