General colour picker improvements

[Secret-chest]

Swatches

I know #1698 exists, but I don't think five bright colours and five skintones will do. It won't be as good as the 2.0 version many have been asking for. Of course this new palette warrants smaller swatches (2.0 size or just a bit larger), but that's fine. Red is based on the stop sign, the rest are based on the blocks.

Blue	Purple	Pink	Red	Deep Orange	Orange	Amber	Yellow	Green	Teal	Cyan
#4280d7	#855cd6	#c94fc9	#b84848	#e64d00	#db6e00	#ec9c13	#e6ac00	#389438	#0da57a	#47a8d1
#4c97ff	#9966ff	#cf63cf	#ec5959	#ff661a	#ff8c1a	#ffab19	#ffbf00	#59c059	#0fbd8c	#5cb1d6
#80b5ff	#ccb3ff	#e19de1	#e08491	#ff9966	#ffa54c	#ffbe4c	#ffd966	#7ece7e	#13ecaf	#85c4e0
#b3d2ff	#ddccff	#ffb3ff	#e9a5ac	#f7c1a6	#f5c18e	#ffda99	#ffecb3	#a9d6a9	#75f0cd	#aed8ea

White	Grey	Grey	Grey	Grey	Grey	Grey	Grey	Grey	Grey	Black
#ffffff	#f5f5f5	#dcdcdc	#d3d3d3	#c0c0c0	#a9a9a9	#808080	#696969	#585858	#212121	#000000

Skin	Skin	Skin	Skin	Skin	Skin	Skin	Skin	Skin	Skin	Skin
#f2d6be	#f8c5b0	#dea474	#e8a360	#bd8966	#c77c43	#b15e2c	#a35429	#8a4621	#613919	#291709

More models

Adding more picker models helps users choose colours they need.

I think the wheel could be really fun to use, especially if it came with a tutorial.



This one creates new colours by blending.

Recent colours

Possibly integrated with swatches, it would be really nice to have the ability to view your 10 or so last used colours.

Variable opacity

A separate opacity slider would be useful for creating interesting patterns.

Input for standard format

This way, users can choose to use another colour picker or save their favourite colours for later.

More gradients

Linear gradient mode should have an angle input as well as the ability to add more colours.