[request] color picker/checker/correction

[natowi]

Is your feature request related to a problem? Please describe. It would be great if there was a way to enter the values for each color in the node. The color checker dedection works reliable, but it assumes the colors are macbeth default.

Describe the solution you'd like

• Allow to select a detected color field and apply a custom value
• Allow to copy the color value and apply it to nodes as applicable (a specific color code for the image masking node for example) (Making the color picker in the Image viewer actually useful)
• Allow rgb or hex code, show preview of color in the color code edit mode

Describe alternatives you've considered At the moment only macbeth chats can be used, but there are other 4x6 charts out there with other color values that need a way for specifying their reference value.

• Having a "helper" file that can be read by the alicevision node and contains the color checker information (color codes for each area)

Additional context

@demoulinv