what color is the fresh scent liquid?

My Fresh Scent liquid Cascade Complete is Blue in color.

No really, how many loads of dishes can you get out of this bottle?

The 75-ounce bottle should wash approximately 75 loads based on using 1-ounce per load, which is the size of a shot glass.

How many loads per 75 floz.?

This varies with the dishwasher model, but typically about one ounce of liquid is used for the wash, while another 1/2 to 1 ounce may be used for prewash. So for a 75-ounce bottle, you should probably get about 37-75 washes, if your dishwasher is pretty average.