Update mui theme

src/components/tracker/TrackerActiveCard.tsx

@@ -257,7 +257,7 @@ export const TrackerActiveCard = ({
         <Card sx={CARD_STYLING}>
             <CardContent sx={{ padding: 0 }}>
                 <TrackerActiveHeader trackRecord={trackRecord} tracker={tracker} openSearch={onClick} />
-                <Card>
+                <Card sx={{ backgroundColor: 'background.default' }}>
                     <CardContent sx={{ padding: '0' }}>
                         <Box sx={{ padding: 1 }}>
                             <TrackerActiveCardInfoRow>

src/components/tracker/TrackerMangaCard.tsx

@@ -117,6 +117,7 @@ export const TrackerMangaCard = ({
     return (
         <Card
             sx={{
+                backgroundColor: 'background.default',
                 marginBottom: 2,
                 '&:last-child': { marginBottom: 8 },
             }}

src/components/tracker/TrackerSearch.tsx

@@ -182,7 +182,6 @@ export const TrackerSearch = ({
                         <Button
                             disabled={bindTrackerMutation.loading}
                             size="large"
-                            color="primary"
                             variant="contained"
                             onClick={trackManga}
                             sx={{ width: '75%' }}