Is there a palette app with a movable glass to convert text color code into a color?

Question

I have a text with #000000 colors, and I'd like to move a rectangular glass over it and see the color.

It'd be helpful if I could rest the glass, choose another color in the app and have the text be modified accordingly.

Answer 1

Colorbox is a simple and powerfull software which make you able to do exactly what you want with colors