Really stoked for this drawing, I'm a big fan of your aquatic designs ETF
First the turtles, now the fugus. Come to think of it, the bomb kings kinda remind me of anglerfish.
The spines are optically clear on those and contain tritium granules in case you were wondering. The GID is pretty intense.
This statement about tritium granules got me curious. Tritium is an isotope of hydrogen, which means it's a gas and not a solid, and thus unable to form granules (AFAIK). This gas is typically enclosed in borosilicate glass vials that are coated with a phosphor on the inside which emits light when struck by beta particles resulting from radioactive decay of the tritium. Did you mean that these have tritium vials embedded in the resin? If that were the case, I would have expected the GID for each spine to look a bit more uniform than in the photo. Although that could be due to the vials being embedded at various depths resulting in different resin thicknesses overlaying the vials. Also the angle of the photo likely plays a role. I actually like the non-uniform look since it looks more natural.
Either way, this is a really cool innovation in keycap design and an impressive technical achievement.