The current colors are the result of some feedback regarding colorblindness. My guess is that the developers may not understand that there isn't just one type of colorblindness. The colors are now supposed to go green, blue, black, orange red.
You may need to send in a ticket to ask whether a separate user-setting (or two) could be added to assist with this issue. My own preference was to include Bold & Italics on the to distinguish between the High-High (currently Green) and Low (currently orange) from Low-Low (red). There may be a better fix that you could try to develop.
The reality is that WIS, as a wing of FOX, should take this opportunity to get user feedback from users that they could implement across platforms.