Thank you for your answer.
I know that many accessibilty interfaces in many programs use the more contrast option but unfortnately with too much contrast I get severe migrain very fast.
Of course I'm not demanding changes in vortex, just tips on color combinations from other users with poor vision (astigmatic + hyperopic + migrain) <- not sure they are the correct terms in english, I use google tranls for words I don't know
ok, thank you for your time