That's where my question comes from, some flowers (wildflowers, fir trees...) make way darker honey than typical summer flowers for example. Rapeseed flowers produce almost white, very solid honey.
The honey gets stored by the bees over months. Different pollen sources are available at different times, so it looks different in different places in the hive. I use a type of frame that let's me harvest each frame individually, so the different colors don't get all blended together.