Any utility to adding a color wheel to WXT (and Qt) terminals?

[Daniel J S. <dan...@ie...>]

Often when I am developing a set of plot commands I'll just toss in some 
colors that are distinguishable, e.g., "red", "green".  Something quick. 
  But those colors are often too bright or too monochrome to view 
comfortably in a more "finished-product" plot such as a publication or 
application.  To choose customized colors "#RRGGBB", I often go to some 
color wheel (usually gimp) and pick the colors visually, for which the 
color wheel presents the associated RGB values.

The thought just came to mind, Why not add a color wheel to the Qt and 
WXT terminals for the sake of convenience?  That is, in the menu bar, 
put a small "color-wheel" icon that will pop up the framework's 
color-selector... the selector wouldn't control anything, but simply 
help the user determine suitable RGB values.

Does such a thing sound useful?

Having said that, looking through the Qt terminal I see there is a 
color-selector example already used for picking the background.  So, 
what I'm suggesting is already present.  However, the color-selector 
isn't obvious enough as a feature for convenience.

BTW, the Qt background color selection has what I'd consider a bug.  Do 
some test plot:

set term qt
plot x

and then click on the wrench/settings icon.  "Select background color" 
has a white patch associated with it.  Click on "Select background 
color".  Click "Cancel", and the QColorDialog closes but the associated 
patch has turned black.  I'd assume that "Cancel" should not change the 
example patch.

Dan