Mid tones? That's a strange claim, but it doesn't matter what "tones" they are in the image as long as they're a significant presence in the scene so it's easy to identify where they are showing up in the histogram(s). I guarantee you will learn something useful if you follow through on the test and post your results.
Perhaps, but your skill as a flower photographer isn't the dispute. It's your claim that the A6300's in-camera live histogram is based on the raw data, rather than the RGB/JPEG data, that's being questioned.
OK, but I picked red flowers (aside from the accessibility issue) because of the relative difference in WB co-efficients. Blue flowers will have a bigger visible impact on the luminance histogram but won't red flowers have a bigger visible impact on the raw and RGB histograms? Or am I missing something?
what difference does it make when there is a scene surrounding the subject. there would be no usefulness of the histogram other than the 2 ends in these situations.
i shoot all those they are not deep blue to me. light them with off camera fill flash fire across the surface is the way to pull texture detail from them.