Color

1. Override Colors

For any change in colors : /src/utils/theme/DefaultColors.tsx 
                            
primary: {
  main: '#5D87FF',
  light: '#ECF2FF',
  dark: '#4570EA',
},
secondary: {
  main: '#49BEFF',
  light: '#E8F7FF',
  dark: '#23afdb',
},
success: {
  main: '#13DEB9',
  light: '#E6FFFA',
  dark: '#02b3a9',
  contrastText: '#ffffff',
},
To change primary and secondary color you have to change in 2 files, which is explain below:

2. Override Light Theme Colors

For change , go to : src/utils/theme/LightThemeColors.tsx 
                            
{
  name: 'BLUE_THEME',
  palette: {
    primary: {
      main: '#5D87FF',
      light: '#ECF2FF',
      dark: '#4570EA',
      contrastText: '#ffffff',
    },
    secondary: {
      main: '#49BEFF',
      light: '#E8F7FF',
      dark: '#23afdb',
      contrastText: '#ffffff',
    },
  },
},

3. Override Dark Theme Colors

For change , go to : src/utils/theme/DarkThemeColors.tsx 
                            
{
  name: 'BLUE_THEME',
  palette: {
    primary: {
      main: '#5D87FF',
      light: '#253662',
      dark: '#4570EA',
      contrastText: '#ffffff',
    },
    secondary: {
      main: '#49BEFF',
      light: '#1C455D',
      dark: '#23afdb',
      contrastText: '#ffffff',
    },
    background: {
      default: '#2A3447',
      dark: '#2A3547',
      paper: '#2A3447',
    },
  },
},

Override Colors (Light / Dark Theme)

For any change in colors : package/src/utils/theme/DefaultColors.tsx 
                            
primary: {
  main: "#5D87FF",
  light: "#ECF2FF",
  dark: "#4570EA",
},
secondary: {
  main: "#49BEFF",
  light: "#E8F7FF",
  dark: "#23afdb",
},
success: {
  main: "#13DEB9",
  light: "#E6FFFA",
  dark: "#02b3a9",
  contrastText: "#ffffff",
},