you are Welcomed Sophia!
Yes, indeed, Wilton’s has 2 red’s and the no taste one will give you an orangy tinted instead of the lovely red on Rose’s book unless you use the whole jar. Trying to cut back on how much food colouring and price (those little jar get pricey after a while!) I decided to stick with the red red instead as i use half I have also tried with different brands, names i can’t recalled but was suggested by clerks working at Ares and such… never worked. was either too pink or orange.
Looking at your pictures, I’m starting to think that depending on their performances, it’s the quantity of the colouring that needs to be adjusted depending on the brands, in order to make the cake a deep red… the photo for b seems close, perhaps same amount of chocolate cocoa with a little more red colour would work? I am now use to seeing what the batter should look like before baking it so luckily i can adjust when using a different brand of colouring when i’m out of wilton’s before it goes into the over!