Where in the list does it give the colour of the diesel SnakeDoc?
Perhaps it might help Simon, if we knew why you wnated the colour of the diesel fuel. Like most transparent liquids, it would appear different depending on how it's being viewed (through a clear hose or looking inside a deep tank) or how long it's been sitting (older fuel tends to get darker with age).
My guess is that it would be about the same colour as diesel fuel is today. That is to say that there would be some variation depending on the manufacturer and what colouration they might be intentionally adding to it.
The diesel I've gotten for my boat seems to vary from almost colourless with a slight hint of amber or yellow) at some gas stations (say at Shell for example) to a darker, almost honey-coloured liquid at others (Esso for example) but I've really never paid it much attention. Most of the time I only see it if I spill it, since it goes directly into the container from the hose and then into the fuel tank on the boat, hopefully never seeing the light of day. It's an awful smell, as I found out when I spilled a couple of litres in my bilge more than a decade ago and it took about 5 or 6 years to get the smell out of the boat, even using all sorts of environmental cleansing agents.
SnakeDoc's link mentions Kogasin, which I presume must be a smei-synthetic distillate of crude oil having a iodine in it, which might give it a darker tint, but I'd guess that if you use a honey colour, you'd be about right. Keeping in mind that "honey" is also a vague term for colour, since honey can vary from almost clear to a dark amber, so in it would be just about right.