Color Picker Card

[elliotmatson]

Is your feature request related to a problem? Please describe.
I'm working on a tally light solution, that triggers certain lighting states based on the state of network devices, and it would be really helpful to have a color picker available!

Describe alternatives you've considered
Currently I'm just using a text field that can accept color strings or hex values, but that isn't as clean

[ayushsharma82]

Added in pipeline. I'll update when it's implemented.

I'll need some more info:

1. What is more convenient: hex string or rgb/rgba values?
2. Is alpha channel necessary?

[elliotmatson]

Thanks! No need for alpha, and hex would probably be better

[finchamp]

Pro user here, but I need this feature, as well. Hex color values are fine.

[mathieucarbou]

For what is worth, if this feature gets implemented, I would like to see activated with a macro, like DASH_COLOR_PICKER_SUPPORT, in order to avoid increasing too much the PROGMEM data.

Note: I am taking as an hypothesis that adding this feature would require subsequent code of additional javascript, css and and html.

[finchamp]

Bootstrap has a color picker, and there are a number of other freeware JS options out there. I'm hoping it would be pretty simple to implement, but I can't say.