My Synapse is navy because I thought it would stick out without looking stupid in photos.
The Imago I have is mostly used to carry supplies for the dogs when we take them with us. It's crimson and navy. I sometimes wish it was more neutral because it really clashes with what I wear in a photo. Silly but there it is.
For travel bags I will probably keep going crimson if possible. I thought black or steel for a Co-Pilot (not ordered yet) but crimson might be nice so I don't accidentally forget it somewhere like under the plane seat or under the table at dinner.