I just did some laundry and put on a shirt I had washed. The lights in my apt aren’t great and I noticed a slight discoloration stain which of course is highly visible in the harsh work lights and sunlight. How did this happen? My washing machine has pretty basic choices – small, med and large; temps – I can only choose warm and cold (no hot because I attach my washing machine to the kitchen sink) and cotton/sturdy, permanent press, wool and delicate. I basically use the cotton setting and warm/warm for almost everything. Thanks so much!!!