...the colour loss is not so exact. What are the ambient light conditions for those PADI figures? The water turbidity?
But to depend on your watch dial for depth...nice romantic thought!
But the real demonstrate the vaguaries of colour change....the 40m photo....green dial is now black....green bezel is...still green...
The blue lume is a slightly different matter. It will definitely be more 'penetrative' through the water...but how far can a watch be from your mask? 50cm? Not much for the light being emitted from the lume to travel...whether that light is blue or the more usual green....
Still jealous of your warm water dives, Kari. The water temps have reached a balmy 15C...at the surface....