I don't follow her diet at all, I just discovered these one day when looking for resources to support my quest to get this weight off, and have been using them every day since.
They are basically a set of four pots in different colours which you use to measure certain foods which traditionally gobble up the most calories in your daily allowance. So, for example, they measure pasta, rice, wine, cereals and oats amongst other things, and with the set of pots you are given a card which tells you how many calories are in each measure. They are especially useful for items like grated cheese which I really enjoy in sandwiches and which reduces the calorie intake considerably over using block cheese.
The Rosemary Conley portion pots come in four colours, and are blue 80ml, yellow 125ml, red 250ml, and green 330ml. They are bright and cheerful in their primary colours, and impart a simple look which I like as this really is a simple way to just take out a few calories each day.

You can watch an informative video about these pots on Rosemary Conley website at
www.rosemaryconley.tv/Shop/Kitchen-Essentials/Por tion-Pots.aspx
In this video Rosemary shows two different portion sizes in two separate but identical meal choices, illustrating the vast difference in calories. This really opened my eyes to thinking about how I ended up gaining weight, even though what I was eating was essentially healthy.
I can't tell you how fantastic these are. I use them several times a day and have done for many years and it takes all the guess work out of portion control. If I am having cereal for breakfast I will use them. This is one area where I have saved a lot of calories as my original bowl was slightly more generous than the one I have now! This is really important as I like granola based cereals but these can be quite calorific.
For dinner I will use them to measure pasta and the great thing is that you can use them to measure the dried pasta either as dried weight or as cooked. This is brilliant if you have a family and just want to pour in the dried pasta from the bag into the pan, and you can worry about your portion size at serving time instead of at the start. The larger green pot has a hole in the handle which allows you to measure dried spaghetti which is really helpful as it can be calorific.
I have found over the years that I know what each colour represents in terms of calories pertaining to each food, and so it is second nature to me to use the pots and rarely do I have to refer to the card that is provided.
There is no doubt in my mind that these are a valuable tool and they have allowed me to regain my normal weight without having to go on diets. My Slimming World experience turned me from a normal food consumer to one bordering on obsession, and my first and last dieting efforts with them left me in somewhat of a chocoholic state! Now I just tweak my portions of everyday food and the pounds stay off and my fear of turning into my ancestors has diminished.
A very good idea!