jamovi

I computed a Z-Score using the built-in formula. When I look at the Descriptors table I should have a mean of zero, but it displays in Scientific Notation even though I have the format set to DP

I have impaired vision and the white background that jamovi using is painful for me to work in. The high contrast modes for both windows 10 and Chrome, seem not to apply to jamovi. This there another way to get a dark background with light letering? Is one being devoloped?