I did this earlier this year with food colouring. Those same kind of glasses and exact same colours. I couldn't get any decent photos, though. I don't have a studio or lighting or anything, and it was dark, so I couldn't use sunlight.
I don't even have lamps. lol I literally only have a camera and overhead light and that's it. And if I adjust the lighting with GIMP (can't afford Photoshop and can't get Lightroom, either), it just takes away all the colour and washes it out. :blech: lol