The colour should just be any kind of neutral, i say get laminate that looks like wood flooring. The most important thing to remember while flipping is, the buyer doesnt want to have to replace anything...so make sure that you pick a flooring that is...
I listened to the flooring first and then walls against my better judgement. I wound up with a really time consuming job of trying to totally cover the flooring (which I still wound up with paint on the floor somehow) trying to manuever the ladder ov...
Go for carpet. Get a carpet rem, it will be cheap. You can get something you like later if you finish the area. Do not paint, It will be hard to put down tile or lino if the concrete is painted. You will need to remove 99% of it before you do.