Late to the party, but in the lack of Dulux colour cards back then, any colour that was not directly one thing or another worked. Added that in England those two colours were only seen on liveries and not arms, meant that there was less need to be precise in what was being depicted.
So Tawny was somewhere mid-point between yellow and orange and Murray somewhere between red and purple. As Hu Rhu says, Murray was supposed to be the colour of mulberries (or blood... in France it is called Sanguine), or as we might say 'maroon', but there was a wide variation in what one person saw compared to another... it even appears as 'brick red' in some places.
Short answer: Yes that standard has 'Murray' on it.
Edit: 'Sangria' sort of means 'flowing blood', or 'bleeding', so that range of colours works too. Far be it for me to recommend comparing all of the various shades of Sangria in one sitting though.