You absolutely can define your own colours. You can even have different colour pools per bracket type ([] () {}) if you want. Given that colour blindness is a

You absolutely can define your own colours. You can even have different colour pools per bracket type ([] () {}) if you want. Given that colour blindness is a wide spectrum, I don't know what more people expect VS Code to do here? Your chosen theme decides the original colours, then you can override them. Isn't that enough?