In a column, next to the table I have, I used this formula:

=IF(WEEKDAY(Table1[[#This Row];[Datum]])=2;”Monday”;”Not Monday”)

I copied this formula to the other cells and then I filtered that specific column for Mondays and colored the background of those cells manually. This method does obviously not work so well if you have a lot of data, but formatting a few rows where dates are not changing should at least be quicker than manually going through each date.

You could also use something like this:

=IF(WEEKDAY(A1)=2;”Monday”;”Not Monday”)

The weekdays have the following numbering:

Sunday = 1
Monday = 2
Tuesday = 3
Wednesday = 4
Thursday = 5
Friday = 6
Saturday = 7

Clustered-stacked column chart

It took me a while to find how to accomplish this, I googled different variations of “Excel 2007 series values” minus, negative, stacked, “excel 2007 axis scale”, “same secondary scale”, “negative bar color”. I even attempted scripting it, but with no luck.

This chart is used to illustrate why a company is not necessarily profitable, despite that it looks that way first. The profits exceed the costs at a first look (above the zero), but adding costs for personnell and operating expenses, the actual result is negative, as seen above where the multi-colored bar (expense types) is longer than the blue (income).

Before deleting

After deleting

Selecting the legend key also allows formatting, even though the text itself cannot be edited. Pressing CTRL + B or the bold button would make the text bold, for an example.