Apply light blue to 16px icon

Considering other icon sizes use gradient instead of solid color,
light blue (106 207 236) seems to be a better fit than blue (0 170 222).
2 jobs for master in 1 minute and 13 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #3408
build

00:00:31

 
  Distcheck
passed #3409
distcheck

00:00:41