As we collectors know only too well, too many things can influence how we see colour/shade/hue/tints - and I don't even really know what the difference is between some of these words, but those influences are sufficient to make impossible and rather pointless to argue about images on the screen
You can call this dolphin whatever colour you wish, but it does have that something that makes me think immediately of Wedgwood - and am sure that if you said to someone 'you know those topaz/amber dolphins from Wedgwood', they'd know fairly quickly what it was you were describing, whether you used the correct colour word or not.
Was the process of colouring mixing at Wedgwood an exact science - I wouldn't have thought so - a very small difference in the batch might just make the difference for people to disagree on the outcome.
Speaking of this particular colour/shade/tint/hue, I have an early decanter that is almost colourless in places, and then again some animals show the most dense effect of all - and as we've seen here opinions are varied on what to call the resulting effect. Just looked at my candleholders in topaz, and they don't appear quite as dense as the animals, but probably more dense than most other articles.
I wish Wedgwood had used amber - would have made life easy for us, but the nearest the book gets is topaz.
I can show the above items if of interest, but get the feeling it's too easy to get bogged down with trivia instead of enjoy our glass collecting.