In the first two pictures WB is set to auto. In the last one with the pizza sign is set to fluorescent. Auto mode tries to approximate the right balance with various degrees of success. It's not easy to get the WB right with multiple kind of sources or ones that have not the exact color temperature of the presets in your camera. Best approach is to shoot in RAW and correct the colors in software. Or to try to tweak the white balance in camera if you want to shoot JPEGS. Anyway if you haVe multiple kind of light sources it gets messy with colors and the post production is much more complicated than otherwise.
Canon PowerShot S100
Canon 50D , SIGMA 10-20 f3.5 ,Canon EF 24-105 L IS USM, Canon EF 100/2.8 macro Canon EF 50/1.4 ,Canon EF 85 f1.8,Canon EF-S17-85 4-5.6 Old Tamron 28-300 inherited from my Canon Rebel G film camera