​
Customizing theme

One can pass all the shades of your primary color by yourself to the init theme like 
primary : {
    50: '#F0F6FE',
    100: '#DDEBFC',
    200: '#C3DCFA',
    300: '#9AC7F6',
    400: '#6BA8EF',
    500: '#4888E9',
    600: '#336BDD',
    700: '#2853C2',
    800: '#2847A5',
    DEFAULT: '#2847A5',
    900: '#254083',
    950: '#1B2850'
  }
Or passing the single hex of your color palette like below which we would take the color code for the shade 900 and generate the remaining shades ourselves. primary : '#254083'

​
Style configuration

Style encapsulation in custom elements web components is removed by disabling shadowRoot of web components and hence the styles from the parent dom will be applied to the widgets. To prevent widget css leaking to other elements in the dom, styles are namespaced inside the class name .togai-widget for every widget. One could target certain css classes of the widget and override them in the parent. Make sure to use the higher specificity to override. togai-ui-widgets use css variables for scalable css. One can choose to override the variables to change the styles in scale. Below is the list of variables used. 
--togai-color-primary-50: #f0f6fe;
--togai-color-primary-100: #ddebfc;
--togai-color-primary-200: #c3dcfa;
--togai-color-primary-300: #9ac7f6;
--togai-color-primary-400: #6ba8ef;
--togai-color-primary-500: #4888e9;
--togai-color-primary-600: #336bdd;
--togai-color-primary-700: #2853c2;
--togai-color-primary-800: #2847a5;
--togai-color-primary: #2847a5;
--togai-color-primary-900: #254083;
--togai-color-primary-950: #1b2850;

--togai-color-gray-50: #ffffff;
--togai-color-gray-100: #f8fafc;
--togai-color-gray-200: #f1f5f9;
--togai-color-gray-300: #e2e8f0;
--togai-color-gray-400: #cbd5e1;
--togai-color-gray-500: #94a3b8;
--togai-color-gray-600: #64748b;
--togai-color-gray-700: #475569;
--togai-color-gray-800: #242f40;
--togai-color-gray-900: #1e293b;
--togai-color-gray: #1e293b;
--togai-color-gray-950: #020617;

--togai-color-accent-green-50: #edfcf6;
--togai-color-accent-green-100: #d4f7e7;
--togai-color-accent-green-200: #aceed4;
--togai-color-accent-green-300: #77debb;
--togai-color-accent-green-400: #3fc89e;
--togai-color-accent-green-500: #1cad85;
--togai-color-accent-green-600: #0f8a6b;
--togai-color-accent-green: #0f8a6b;
--togai-color-accent-green-700: #0c7059;
--togai-color-accent-green-800: #0c5947;
--togai-color-accent-green-900: #0b493d;
--togai-color-accent-green-950: #052922;

--togai-color-accent-red-50: #fef2f2;
--togai-color-accent-red-100: #fee2e2;
--togai-color-accent-red-200: #fecaca;
--togai-color-accent-red-300: #fca5a5;
--togai-color-accent-red-400: #f87171;
--togai-color-accent-red-500: #ef4444;
--togai-color-accent-red-600: #dc2626;
--togai-color-accent-red: #dc2626;
--togai-color-accent-red-700: #b91c1c;
--togai-color-accent-red-800: #991b1b;
--togai-color-accent-red-900: #7f1d1d;
--togai-color-accent-red-950: #450a0a;

--togai-color-accent-yellow-50: #fffbeb;
--togai-color-accent-yellow-100: #fef3c7;
--togai-color-accent-yellow-200: #fde68a;
--togai-color-accent-yellow-300: #fcd34d;
--togai-color-accent-yellow-400: #fbbf24;
--togai-color-accent-yellow-500: #f59e0b;
--togai-color-accent-yellow-600: #d97706;
--togai-color-accent-yellow-700: #b45309;
--togai-color-accent-yellow-800: #92400e;
--togai-color-accent-yellow-900: #78350f;
--togai-color-accent-yellow-950: #451a03;
--togai-color-accent-yellow: #d97706;

--togai-color-accent-rose-50: #fff1f2;
--togai-color-accent-rose-100: #ffe4e6;
--togai-color-accent-rose-200: #fecdd3;
--togai-color-accent-rose-300: #fda4af;
--togai-color-accent-rose-400: #fb7185;
--togai-color-accent-rose-500: #f43f5e;
--togai-color-accent-rose-600: #e11d48;
--togai-color-accent-rose-700: #be123c;
--togai-color-accent-rose: #be123c;
--togai-color-accent-rose-800: #9f1239;
--togai-color-accent-rose-900: #881337;
--togai-color-accent-rose-950: #4c0519;

--togai-color-accent-purple-50: #faf5ff;
--togai-color-accent-purple-100: #f3e8ff;
--togai-color-accent-purple-200: #e9d5ff;
--togai-color-accent-purple-300: #d8b4fe;
--togai-color-accent-purple-400: #c084fc;
--togai-color-accent-purple-500: #a855f7;
--togai-color-accent-purple-600: #9333ea;
--togai-color-accent-purple-700: #7e22ce;
--togai-color-accent-purple: #7e22ce;
--togai-color-accent-purple-800: #6b21a8;
--togai-color-accent-purple-900: #581c87;
--togai-color-accent-purple-950: #3b0764;

--togai-color-accent-indigo-50: #eef2ff;
--togai-color-accent-indigo-100: #e0e7ff;
--togai-color-accent-indigo-200: #c7d2fe;
--togai-color-accent-indigo-300: #a5b4fc;
--togai-color-accent-indigo-400: #818cf8;
--togai-color-accent-indigo-500: #6366f1;
--togai-color-accent-indigo-600: #4f46e5;
--togai-color-accent-indigo-700: #4338ca;
--togai-color-accent-indigo: #4338ca;
--togai-color-accent-indigo-800: #3730a3;
--togai-color-accent-indigo-900: #312e81;
--togai-color-accent-indigo-950: #1e1b4b;

--togai-color-accent-orange-50: #fff7ed;
--togai-color-accent-orange-100: #ffedd5;
--togai-color-accent-orange-200: #fed7aa;
--togai-color-accent-orange-300: #fdba74;
--togai-color-accent-orange-400: #fb923c;
--togai-color-accent-orange-500: #f97316;
--togai-color-accent-orange-600: #ea580c;
--togai-color-accent-orange-700: #c2410c;
--togai-color-accent-orange: #c2410c;
--togai-color-accent-orange-800: #9a3412;
--togai-color-accent-orange-900: #7c2d12;
--togai-color-accent-orange-950: #431407;

--togai-color-accent-teal-50: #f0fdfa;
--togai-color-accent-teal-100: #ccfbf1;
--togai-color-accent-teal-200: #99f6e4;
--togai-color-accent-teal-300: #5eead4;
--togai-color-accent-teal-400: #2dd4bf;
--togai-color-accent-teal-500: #14b8a6;
--togai-color-accent-teal-600: #0d9488;
--togai-color-accent-teal-700: #0f766e;
--togai-color-accent-teal: #0f766e;
--togai-color-accent-teal-800: #115e59;
--togai-color-accent-teal-900: #134e4a;
--togai-color-accent-teal-950: #042f2e;

--togai-color-accent-lime-50: #f7fee7;
--togai-color-accent-lime-100: #ecfccb;
--togai-color-accent-lime-200: #d9f99d;
--togai-color-accent-lime-300: #bef264;
--togai-color-accent-lime-400: #a3e635;
--togai-color-accent-lime-500: #84cc16;
--togai-color-accent-lime-600: #65a30d;
--togai-color-accent-lime-700: #4d7c0f;
--togai-color-accent-lime: #4d7c0f;
--togai-color-accent-lime-800: #3f6212;
--togai-color-accent-lime-900: #365314;
--togai-color-accent-lime-950: #1a2e05;

--togai-color-white: #ffffff;
--togai-color-nav-bg: var(--togai-color-gray-950);
--togai-color-nav-bg-light: var(--togai-color-gray-900);
--togai-color-nav-font: var(--togai-color-gray-400);
--togai-color-nav-font-light: var(--togai-color-gray-50);
--togai-color-nav-highlight: var(--togai-color-gray-950);

--togai-radius-xs: 0.25rem;
--togai-radius-sm: 0.5rem;
--togai-radius-md: 0.75rem;
--togai-radius-lg: 1.5rem;
--togai-radius-circular: 50%;

--togai-spacing-0_5: 0.25rem;
--togai-spacing-1: 0.5rem;
--togai-spacing-1_5: 0.75rem;
--togai-spacing-2: 1rem;
--togai-spacing-2_5: 1.25rem;
--togai-spacing-3: 1.5rem;
--togai-spacing-3_5: 1.75rem;
--togai-spacing-4: 2rem;
--togai-spacing-4_5: 2.5rem;
--togai-spacing-5: 3rem;
--togai-spacing-5_5: 3.5rem;
--togai-spacing-6: 4rem;
--togai-spacing-6_5: 4.5rem;
--togai-spacing-7: 5rem;

--togai-shadow-1: 0rem 0.125rem 0.5rem 0rem var(--togai-color-gray-300);
--togai-shadow-2: 0rem 0.125rem 0.5rem 0rem var(--togai-color-gray-500);
--togai-shadow-3: 0rem 0.125rem 0.5rem 0rem var(--togai-color-gray-700);
--togai-shadow-none: 0rem 0rem white;

--togai-font-xs: 0.75rem;
--togai-font-sm: 0.875rem;
--togai-font-md: 1rem;
--togai-font-lg: 1.125rem;
--togai-font-xlg: 1.25rem;

--togai-font-weight-regular: 400;
--togai-font-weight-medium: 500;
--togai-font-weight-semibold: 600;
--togai-font-weight-bold: 700;

--togai-font-size-h1: 4.25rem;
--togai-font-size-h1--line-height: 5.0625rem;
--togai-font-size-h2: 2.625rem;
--togai-font-size-h2--line-height: 3.125rem;
--togai-font-size-h3: 1.625rem;
--togai-font-size-h3--line-height: 1.9375rem;
--togai-font-size-h4: 1rem;
--togai-font-size-h4--line-height: 1.1875rem;
--togai-font-size-body1: 0.875rem;
--togai-font-size-body1--line-height: 1.0625rem;
--togai-font-size-body2: 0.75rem;
--togai-font-size-body2--line-height: 0.875rem;
--togai-font-size-title14: 0.875rem;
--togai-font-size-title14--line-height: 1.0625rem;
--togai-font-size-title12: 0.75rem;
--togai-font-size-title12--line-height: 0.875rem;
--togai-font-size-title10: 0.625rem;
--togai-font-size-title10--line-height: 0.75rem;