Color

To change primary and secondary color you have to change in 2 files, which is explain below:

Override Light Theme Colors

For any change in colors : theme/LightTheme.ts 
                    
const BLUE_THEME: ThemeTypes = {
  name: 'BLUE_THEME',
  dark: false,
  variables: {
      'border-color': '#e5eaef',
      'border-opacity': 1,
  },
  colors: {
      primary: '#0085db',
      secondary: '#707a82',
      info: '#46caeb',
      success: '#4bd08b',
      warning: '#f8c076',
      error: '#fb977d',
      indigo:'#8763da',
      lightprimary: '#e5f3fb',
      lightinfo:'#e1f5fa',
      lightsecondary: '#e7ecf0',
      lightsuccess: '#dffff3',
      lighterror: '#ffede9',
      lightwarning: '#fff6ea',
      lightindigo:'#f1ebff',
      textPrimary: '#2A3547',
      textSecondary: '#2A3547',
      borderColor: '#e5eaef',
      inputBorder: '#DFE5EF',
      containerBg: '#ffffff',
      background: '#f0f5f9',
      hoverColor: '#f6f9fc',
      surface: '#fff',
      grey100: '#707a82',
      grey200: '#111c2d',
      darkbg:'#2a3447',
      bglight:'#f5f8fb',
  }
};

Override Dark Theme Colors

For any change in colors : theme/DarkTheme.ts 
                    
const DARK_BLUE_THEME: ThemeTypes = {
  name: 'DARK_BLUE_THEME',
  dark: true,
  variables: {
      'border-color': '#182D41', 
      'border-opacity': 1,
  },
  colors: {
      primary: '#0085db', 
      secondary: '#7C8FAC',
      indigo:'#8763DA',  
      lightprimary: '#1b394f',
      lightinfo:'#1a3247', 
      lightsecondary: '#2f3f4c',
      lightsuccess: '#102d35', 
      lighterror: '#72483d',
      lightwarning: '#282b32', 
      textPrimary: '#EAEFF4',
      textSecondary: '#fff',
      lightindigo:'#1d233e',  
      borderColor: '#182D41', 
      inputBorder: '#465670',
      containerBg: '#111C2D', 
      background: '#16293e', 
      hoverColor: '#333f55',
      surface: '#111C2D', 
      grey100: '#7C8FAC', 
      grey200: '#EAEFF4', 
      darkbg:'#111936',
      bglight:'#16293e',
      bgdark:'#16293e'
  }
};