[quote=@Sep]
<Snipped quote by Lewascan2>

I always assumed that as a Dac design the lighting was lower as underwater species would be used to lower levels of light and hues of colour

[/quote]

Oh, the lighting [i]is[/i] lower on average, but it's still hardly [i]dank[/i], lol.
Though, more accurately, consider the lighting to be the same as we saw inside Grievous's flagship in Episode 3. The vast majority people won't have any trouble seeing perfectly clearly, but the key here is the coloration. Using dark greys for the surfaces helps the light not be too intense due to rebound.... pretty much exactly like you said.