I remember someone made such a sking in the past, but I'm not sure there's one for FM18. However, you can achieve this to some extend by enabling the "Bar chart" option in preferences - interface. This makes it a bit hard to guess the numbers. Also it's getting even harder if you change the default attribute/bar chart colors to one color or even better if  you try to match the background color, so you won't be able to see the charts at all. Also you can hide the attributes/bar charts from you pr