Specify data colors in bar graph without data points

Hi everyone, I'm building a dashboard which will automatically fill with data in 2018, due to the miracles that is datesbetween () . My client would like the graphed data to match the colors of their logo. However, I can't seem to specify the colors if no data is depicted in the graph yet (the option to adjust data color simply does not show up in the Format tab). Perhaps I'm doing something wrong, perhaps this has already been fixed, but I just thought I'd mention it here as a suggestion for improvement. Bests, Evert