feat: add material ui theme

striker-ui/theme/index.ts

@@ -0,0 +1,35 @@
+import createMuiTheme, { Theme } from '@material-ui/core/styles/createMuiTheme';
+import { PANEL_BACKGROUND } from '../lib/consts/DEFAULT_THEME';
+
+const theme: Theme = createMuiTheme({
+  palette: {
+    primary: {
+      main: '#343434',
+      light: '#3E78B2',
+    },
+    secondary: {
+      main: '#343434',
+    },
+    background: {
+      paper: PANEL_BACKGROUND,
+    },
+  },
+  typography: {
+    fontSize: 14,
+  },
+  overrides: {
+    MuiSwitch: {
+      root: {
+        padding: 8,
+      },
+      track: {
+        borderRadius: 0,
+      },
+      thumb: {
+        borderRadius: 0,
+      },
+    },
+  },
+});
+
+export default theme;