The "What-is" of Color, Sound, Heat & Cold are Facts?

[Veritas Aequitas]

I don't believe anyone would deny "the 'what-is' of Color, Sound, Heat & Cold" are Facts?
Would you?

Here is what Hume Concluded in one of his Chapters on Morality in
Book III-Part I-Section 1 of his A Treatise of Human Nature;
in [= mine]

Vice and virtue [morality], therefore, may be compar’d to sounds, colours, heat and cold, which, according to modern philosophy, are not qualities in objects, but perceptions in the mind:

And this discovery in morals, like that other in physics, is to be regarded as a considerable advancement of the speculative sciences; tho’, like that too, it has little or no influence on practice.

Since it is undeniable whatever qualities from sounds, colours, heat and cold and others in Physics are facts;
then, the qualities of Hume's moral are also facts, i.e. moral facts.

Note; Hume asserted one cannot derived 'ought' from 'is' but he did not deny moral facts do not exists.
Since moral facts exist as such, then morality is objective in this sense.

Btw, Hume is a dogmatic Empiricist and had very high regard for the facts of Science.

Agree?
Disagree? why?