To hide small nics or chips in flooring, try melting a crayon that is the best match to the color of the floor, drip the wax into the nic or chip until the wax fills the hole completely. Use a plastic scraper or ruler to ‘level off’ the top so the wax is even with the floor. This isn’t a permanent fix and is going to need to be done again because the wax wears away, but it can hide the spots nicely until its time to refresh your quick fix.
If you have the time and want a perfect match you can experiment with mixing different crayons to get a better match. Try writing down the names and amounts of each color crayon you used to get the best match, this will save time when your ready for a refresher.