Hello. I am new here and new to collecting coins and bills. I work in retail and handle a lot of bills and started noticing differences and looking things up. So please forgive me if I am posting a very average ordinary dollar bill. Lol. I found a 2017A $1 bill last night where the top right serial number is green and the bottom left one is black. I cant find anything about this on the internet. I looked through the safe and every other bill in there both numbers are green. I am going to try and post a picture. Thanks for any info anyone can give me. I'm having a hard time uploading an image. Ugh.