You should see 3 colored bars: one green, one blue and one yellow. Let me start by saying that you should first look at your RCI demand bars (not sure if this is what it is official called) that is located at the very bottom-center of your screen. So if you are new to the game, I'm wondering if your problem is that you have too much 'industry' in your city, and the game wants you to 'grow' more residential or commercial. I'm noticing that you only have a couple of posts ever, on this forum, so my assumption in that you are completely new to Cities Skylines.