For any photo, especially photos viewed on your screen, I wouldn’t trust the colors you see on screen to be accurate. The camera does truckery, your screen does trickery, someone may have edited the photo, etc. All in the name of pizzazz.

As for the actual color, I suspect that it will vary some by been species as well as the flowers they’ve visited.

See also: https://www.beesmax.org/insights-research/honey-bees-and-their-multi-coloured-pollen-stores/