*Thanks everyone for the comments, fav's & follows, in case I don't get around to responding to each one individually*
Based in Dublin, Ireland, started on...
@shutterbug49 I've used a variety of things for my colours - the green was placed on a green sheet of paper with a light shining from above, the purple was from a tablet with a purple desktop background. I sometimes use coloured plastic things in front of the light, like transparent folders. I've increased the saturation for some of them during editing, and some don't need it, like this green one :)