General Tools that helps your chart coloring.

[Bakuzan]

Design your chart and have a good trade!!

Online Services
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Colormind - the AI powered color palette generator
http://colormind.io/

ColorSpace - Color Palettes Generator and Color Gradient Tool
https://mycolor.space/?hex=#242424&sub=1

RGB Color Gradient Maker
http://www.perbang.dk/rgbgradient/

Windows Software
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Corante Color Picker
http://www.ervilsoft.com/corante-color-picker?i=1

My workflow:
Use Colormind to decide backgtoud color and candlestick color.
Make gradient for indicator that has color fill e.g. Ichimoku cloud.
Then pick colors with Corante and get RGB codes.