generate proper neutral colors

[ant-design]

generate proper neutral colors

[audacioustux]

no idea why this issue is closed. 'presetPalettes' returns '#000000' twice. and not identical with https://ant.design/docs/spec/colors#Neutral-Color-Palette

grey: ['#a6a6a6',
    '#999999',
    '#8c8c8c',
    '#808080',
    '#737373',
    '#666666',
    '#404040',
    '#1a1a1a',
    '#000000',
    '#000000',
  ],

[varemenos]

Sorry to bother you again @afc163 but now that the grey color can be generated by the generation tool, could we also include in here?

https://github.com/ant-design/ant-design/blob/master/components/style/color/colors.less

[afc163]

@varemenos It may have compatibility issue but you can try it and send us PR~

[afc163]

Actually, neutral colors in https://ant.design/docs/spec/colors#Neutral-Color-Palette is hand-picked by our designers...