I have an unfinished pine bed frame, which is very susceptible to dents and marks. I recently steamed a minor toenail dent out of one of horizontal panels. I did this by dipping a microfibre cloth in a bowl of boiled water, wringing it out, and pressing the steaming cloth into the dent for a few seconds. I then repeated this a few times. This worked well, with just a faint outline of the dent still visible (doesn't show in the photo). However, the area worked on appears to have lost a small amount of colour. At the time, after repeating the cloth treatment I noticed a small amount of brownish colour to the water in the bowl. It's as if the cloth has absorbed some of the colour.
The steaming dents out of wood solution seems to be very common on the Internet, but from what I've read, none mention the potential for colour loss. From googling around, it sounds like the colour I've managed to pull out might be from the tannin.
It's not a big deal, as the colour loss is only obvious from an acute angle, but I'm curious, is it likely that the colour will even out over time? E.g. With UV exposure and/or other chemical processes that naturally occur in the wood?