Zend certified PHP/Magento developer

How do I change the color of the cell highlight in Calc 7.3?

highlight image

I’ve looked around and changed some values in the Application Colors dialog but none of them seem to be changing that light green. I find it too light to distinguish against a light background. Ideally I’d like a medium yellow color for the whole cell — or at least to try some colors and see what I like.

Note I do not want to change to a dark theme. Dark backgrounds are harder to read for people with astigmatism.