diff --git a/app/src/components/Sidebar/CodeDiff/style.tsx b/app/src/components/Sidebar/CodeDiff/style.tsx
new file mode 100644
index 0000000..dc96cb1
--- /dev/null
+++ b/app/src/components/Sidebar/CodeDiff/style.tsx
@@ -0,0 +1,63 @@
+import { CodeBlockColors, CodeBlockColorsBraceMonokai } from '../CodeBlockColors'
+import { Theme } from '@material-ui/core'
+
+export const style = (theme: Theme) => {
+  const codeBlockColors = theme.palette.type === 'light' ? CodeBlockColors : CodeBlockColorsBraceMonokai
+  const codeBaseStyle = {
+    font: "12px/normal 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace",
+    display: 'inline-grid' as 'inline-grid',
+    margin: '0',
+    padding: '1px 0 0 0',
+  }
+
+  return {
+    line: {
+      lineHeight: 'normal' as 'normal',
+      paddingLeft: '4px',
+      width: '100%',
+      height: '16px',
+    },
+    codeWrapper: {
+      display: 'flex',
+      maxHeight: '15em',
+      overflow: 'auto',
+      backgroundColor: `${codeBlockColors.background}`,
+      margin: '8px 0 0 0',
+    },
+    gutters: {
+      ...codeBaseStyle,
+      width: '33px',
+      backgroundColor: codeBlockColors.gutters,
+      userSelect: 'none' as 'none',
+    },
+    codeBlock: {
+      ...codeBaseStyle,
+      width: 'calc(100% - 33px)',
+      backgroundColor: 'inherit !important',
+      '& span': {
+        color: codeBlockColors.text,
+      },
+      '& .token.number': {
+        color: codeBlockColors.numeric,
+      },
+      '& .token.boolean': {
+        color: codeBlockColors.numeric,
+      },
+      '& .token.property': {
+        color: codeBlockColors.variable,
+      },
+      '& .token.string': {
+        color: codeBlockColors.string,
+      },
+      '& .token': {
+        color: codeBlockColors.text,
+      },
+      '& .token.operator': {
+        color: codeBlockColors.text,
+      },
+      '& .token.punctuation': {
+        color: codeBlockColors.text,
+      },
+    },
+  }
+}