Red Throat pearl argentees

I've watched it twice... the colors of the bird on the right does seem to me to be not natural And I have trouble with a robin whose beak is smaller. However, the colors of the robin are all-natural. I could see this effect of water drops with the sun which passes through to give a beautiful light in arc-en-ciel.

Good evening
No, this is not a RG, but a chaffinch that seems to me to have colors very thorough . The idea of this compo is good, but I find that it is very busy and the blackbird is, in my opinion, too many or poorly placed

Having regard to the beak, this is probably not a red throat with this merle. But a bit far away for identification. May be do you have a picture more closely ?