Changing colour of all the other GUI objects is straightforward:
Sending an int will cycle through the 30 preset colours in the Properties dialog.
But what about arrays? Sending an int to an array via [color $1] seems to cycle through an enormous list of subtle shades.
See the screenshot where I am sending the same value to all the GUI objects. The colours are obviously not the same.

What are the values? Is this list buried somewhere in the pd files?
I have been wondering for years, but I'm done guessing now

@Ice-Ice Most likely, as it is a single integer, that it is the "struct color" that can be found by this patch...
colours.zip
I have included tcl colour names
David.

Here is a direct integer to colour chart......... colours-Pd.zip

@Ice-Ice Arrays and all objects (possibly not data structures) can now take colors specified in hex, makes life a lot easier. Fairly certain for it to be read as a hex color it must be proceeded by a #, so #ffffff and so on.

@oid The Hex values are the "web colours" that can be found using [colormaker] I posted above.
Thank you for the info about the change....!
David.

@whale-av
Wow, thanks a bunch! Yes, it's the "struct color" as in your patch pd-colours.pd. This is a really helpful index. Finally, I know where all these nice yellows and oranges are. Cool that you added the list of tcl colours as a txt, I saw that yesterday in the tcl/tk documentation.
H̶o̶w̶e̶v̶e̶r̶,̶ ̶I̶ ̶c̶a̶n̶'̶t̶ ̶c̶r̶e̶a̶t̶e̶ ̶[̶s̶y̶s̶_̶g̶u̶i̶]̶ ̶o̶r̶ ̶[̶c̶o̶l̶o̶r̶p̶a̶n̶e̶l̶]̶.̶ ̶A̶r̶e̶ ̶t̶h̶e̶s̶e̶ ̶e̶x̶t̶e̶r̶n̶a̶l̶s̶?̶
They're in hcs, which I had installed already. Having a blast right now making my own pd theme!!

@oid
Oh nice! But sending hex values gives me "argument number out of range", anything I am missing here? I tried any formatting, like #AAAA77, #aaaa77, AAAA77, and aaaa77. But none of these worked. Also tried it as symbols, by message or through [symbol], but to no avail.

@Ice-Ice It seems I misremembered, arrays do require the data struct color format but all the other GUIs can use hex now. For the data structure format it is just RGB with the integers 0-8 so 000 is 0 red, 0 green, and 0 blue which is black, 888 is white. Fairly easy to convert hex in your head to the data struct numbers.

Tried it and it works. Head conversion works, too. Cheers!