Hi all, I am a new beekeeper with my first package having been installed just 5 days ago. My hive is being fed 1:1 sugar water through a hive top feeder. I plan to check on the queen's release tomorrow. I peeked in on their food supply today and saw that they are taking the sugar syrup well, so they aren't going hungry. I noticed the poop on the front of the hive. I had expected yellow, but the dark color has me concerned. Is this normal?