I admit this is quite a strange question. The mathematical symbols in my output appear as grey and faded, instead of bold black like my input. I attach a photo.
Both the curly brackets and the minus symbol before 3.12497 are quite difficult to read. I cannot find a permanent formatting option in Mathematica (v11.4) for it. I would like the symbols to appear in the same colour as the numbers in output, or at least be more visible.
Thank you all for any help you may provide.