Thanks for the honest answer, stick with me here because I'm an every little bit helps kind of thinker....
The spectral distribution has the potential to change, there are many combinations of various light colors (combinations of monochromatic light) that will result in the same color temperature.
Now the question... what is happening when additional current is applied? I believe it pulls up the peaks of the spectral distribution.
Why would this be relevant? .... The photons we are looking for reside on the slopes of this distribution and where they are will determine the degree to which they are increased. If we were lucky or good we would be able to selectively increase those wavelengths.
When the overall current is increased the relative intensity of a specific par spectrum color goes up. If the overall current is decreased the relative intensity of a specific color goes down.
When the appropriate testing equipment is set to detect just 450nm it will give the read out for just 450nm, regardless of how much current is used during the pulse test.
The peaks with the highest intensity shift relative to the color rendering index of a COB diode. If my understanding is correct the phosphor coating on a COB is where the CRI changes.
In addition to your chosen, COB and without having to increase the overall amperage. If you want to add more intensity to a specific wavelength just add monochromatic diodes to your LED array.
Here are links to previously posted spectrum graphs:
CLU058-1825 70 CRI
CLU058-1825 80 CRI
CLU058-1825 90 CRI
Just in case: Here are the Citizen CLU058-1825 data sheets.
70 and 80 CRI
90 CRI