RGB to HEX convert script

[Jayce]

I forgot to mention that the second question was outside of mosaic. Let me explain myself better. Right now, I have created a group (let's call it RGB), where I put a simple script that sets three groups (red, green and blue) to certain value. That means when I set RGB group to 1, my exact color mixture turns on. The problem is it is too bright. I need to dim it. As you said, I might be able to dim it with RGBW widget, but that is widget. I'd need it to be outside of mosaic.