Color indication of improvements vs. set backs

When completing the Full Frontal Test more then once the app will give you a Full Frontal Test History. It will mark your improvements since the last test with a green number for every value, say “+7”.
However training is not always a straight line upwards and if your values decrease instead of increase the number, say “-7” will still be green. This is a bit disconcerting since green for me always stands for “good/better”. I would like to have negative numbers, i.e. decreases, in red.