Reading the manual of my new #Shearwater dive computer before class, as one does, and I noticed a note "Color Blind Users:"

The warning or critical warning states can
be determined without the use of color

Color blind users
Warnings display
on a solid inverted
background

Critical Warnings flash
between inverted and
normal text

The note is illustrated with gray scale pictures.

I'm not color blind (that I know about), but I appreciate the attention to #accessibility.

#SCUBA