I can see the same H in the black and white photos.
They colorized the different contrast layers.
It makes the H artificially stand out, but it is the same shape as in the originals.
I can see the “H” in the original also but if it’s not faked, why are the lines of the star blurry and the “H” looks like an overlayed font? Try saving the original and opening with MS Photoeditor, click “Image” and then “Balance” and work with the gamma. If the DA wants the evidence to stick, it better not be doctored.