Have a urinary catheter I have to keep in for a week. In the tube my urine looks yellow but in the bag it looks orange.

Normal. Urine can look all different shades of yellow and orange depending upon your hydration. Often the bag urine will look different colored be caused it is a large quantity of urine. Also depends the background...put the tube or bag up against a white background to get the true color. Also some medications (pyridium) can make your urine different colors. I think everything you are describing is normal.