How to make pink food colouring?

[notanumber]

I'm making play dough. I want to make different coloured batches

I have yellow, blue, green and red bottles of food colouring. I think that I ought to be able to make other colours from mixing these, yes?

I want to make some pink. If it were paint I'd add white to red but I don't have any white colouring (does it even exist?) and so can only make a sort of patchy pale red rather than the bright pink I crave.... How do I do this please?

Add a tiny bit of blue- it will go ever so slightly towards purple, hopefully ending up at pink :)

just use a tiny bit of red and it will mix with the white dough and make pink