I like the black backside more, I have a couple of notes that would make the card and the receipt better. First of all the front side of the card should also have the number, the number should stand out, and the number needs to be written like this on both sides: 070 3 888 666. The website should be written like this: WWW.HAAGSETAXI.NL, you should also add icons for the website, phone & mail.