How do you make all text black?

Question

Is there a function to convert all the text in a PDF to all black?

Answer

No, Quick PDF Library does not include any functions to convert all text in a PDF to all black.

It is not very easy to modify a PDF document as there are infinite ways to define processed to something even as simple as changing all text to B/W.

I.e. Text colour can be defined using different colour spaces such as RGB, CYMK, DeviceN, DeviceGray. It can also be masked or contain transparency.