In your photo above, the blues look obviously different. Left is Navy blue, the right is more sky blue. Not so in the PR photos, they look almost identical.
As for the yellow, one really notices the difference in a large section of color-- as with the pants. (Old color was gold, new color is highlighter yellow) But just on the shoulder of the jersey sleeve, yeah, it's hard to tell.
Whenever I saw the Rams on the field in 2020, it was pretty obvious that their colors were different from years prior. But those PR photos imply they are almost identical.
When the Rams returned to LA, I was ecstatic that they revived the traditional colors. It was so great to leave behind that dingy brown/beige color from the St Louis days.
But now they've messed with the colors yet again.
What can I say, it just bums me out that I can't see my traditional team colors on Sundays anymore. IMHO it's disrespectful to long-time fans for the PR department to "pretend" they haven't changed the color scheme.