ant-design/components/timeline/demo/color.tsx

import React from 'react';
import { SmileOutlined } from '@ant-design/icons';
import { Timeline } from 'antd';

const App: React.FC = () => (
  <Timeline>
    <Timeline.Item color="green">Create a services site 2015-09-01</Timeline.Item>
    <Timeline.Item color="green">Create a services site 2015-09-01</Timeline.Item>
    <Timeline.Item color="red">
      <p>Solve initial network problems 1</p>
      <p>Solve initial network problems 2</p>
      <p>Solve initial network problems 3 2015-09-01</p>
    </Timeline.Item>
    <Timeline.Item>
      <p>Technical testing 1</p>
      <p>Technical testing 2</p>
      <p>Technical testing 3 2015-09-01</p>
    </Timeline.Item>
    <Timeline.Item color="gray">
      <p>Technical testing 1</p>
      <p>Technical testing 2</p>
      <p>Technical testing 3 2015-09-01</p>
    </Timeline.Item>
    <Timeline.Item color="gray">
      <p>Technical testing 1</p>
      <p>Technical testing 2</p>
      <p>Technical testing 3 2015-09-01</p>
    </Timeline.Item>
    <Timeline.Item color="#00CCFF" dot={<SmileOutlined />}>
      <p>Custom color testing</p>
    </Timeline.Item>
  </Timeline>
);

export default App;