It is just a bit of annoyance, really. I'd like to see the option of inputting a hexcode of color and/or a screen color picker in the color dialog. At the moment, you have to change R, G, B separately or play around with the cursor to find the right color.
The color dialog is relevant for the documentation purposes but also reporting tools and I'm sure it would make life easier to some people, especially when branding colours are important.