I wish you would make the measurement lines on the inside of the cap more visible. I use Purex Free & Clear laundry soap, and I absolutely love it. However, even with using a sharpie marking pen to make the lines more visible, and also using a magnifier glass, I simply can't read the lines/numbers to know how much product is sufficient to clean my laundry and to get the stated number of loads from a container of product. Can you please somehow make the lines more visible, or manufacture a permanent cap that is very clearly (and obviously marked for older eyes like mine), that I can move from one used container to the next full container. I don't want to have to keep an extra measuring cup out in my laundry area that could easily fall behind my washer and dryer and be un-retrievable. Help please. Thank you.