diff --git a/components/chart/symptom-cell.js b/components/chart/symptom-cell.js
index 10d6cac..c04a128 100644
--- a/components/chart/symptom-cell.js
+++ b/components/chart/symptom-cell.js
@@ -19,7 +19,7 @@ const SymptomCell = ({
 }) => {
   const shouldDrawDot = symptomValue !== false
   // Determine the background color based on isWeekend prop
-  const weekendBackgroundColor = isWeekend ? Colors.greyVeryLight : 'white'
+  const backgroundColor = isWeekend ? Colors.greyVeryLight : 'white'
   const styleCell =
     index !== 0
       ? [
@@ -27,7 +27,7 @@ const SymptomCell = ({
           {
             height,
             width: CHART_COLUMN_WIDTH,
-            backgroundColor: weekendBackgroundColor,
+            backgroundColor: backgroundColor,
           },
         ]
       : [
@@ -35,7 +35,7 @@ const SymptomCell = ({
           {
             height,
             width: CHART_COLUMN_WIDTH,
-            backgroundColor: weekendBackgroundColor,
+            backgroundColor: backgroundColor,
           },
           styles.topBorder,
         ]
@@ -69,7 +69,6 @@ SymptomCell.propTypes = {
 
 const styles = StyleSheet.create({
   cell: {
-    backgroundColor: 'white',
     borderBottomColor: Colors.grey,
     borderBottomWidth: CHART_GRID_LINE_HORIZONTAL_WIDTH,
     borderLeftColor: Colors.grey,
diff --git a/components/chart/temperature-column.js b/components/chart/temperature-column.js
index abe927b..0396d0f 100644
--- a/components/chart/temperature-column.js
+++ b/components/chart/temperature-column.js
@@ -19,12 +19,12 @@ const TemperatureColumn = ({
 }) => {
   const x = CHART_STROKE_WIDTH / 2
 
-  const weekendBackgroundColor = isWeekend ? Colors.greyVeryLight : 'white'
+  const backgroundColor = isWeekend ? Colors.greyVeryLight : 'white'
   return (
     <Surface
       width={CHART_COLUMN_WIDTH}
       height={columnHeight}
-      style={{ ...styles.container, backgroundColor: weekendBackgroundColor }}
+      style={{ backgroundColor: backgroundColor }}
     >
       <ChartLine path={new Path().lineTo(0, columnHeight)} />
 
@@ -69,10 +69,4 @@ TemperatureColumn.propTypes = {
   isWeekend: PropTypes.bool,
 }
 
-const styles = StyleSheet.create({
-  container: {
-    backgroundColor: 'white',
-  },
-})
-
 export default TemperatureColumn