fix dark themed spreadsheets

src/main/resources/com/sparrowwallet/sparrow/darktheme.css

@@ -54,12 +54,15 @@
 }
 
 .list-cell:even,
-.list-cell:odd,
-.table-row-cell:even,
-.table-row-cell:odd{
+.table-row-cell:even{
     -fx-control-inner-background: derive(-fx-base, 15%);
 }
 
+.list-cell:odd,
+.table-row-cell:odd{
+    -fx-control-inner-background: derive(-fx-base, 20%);
+}
+
 .list-cell:empty,
 .table-row-cell:empty {
     -fx-background-color: transparent;
@@ -67,10 +70,28 @@
 
 .list-cell,
 .table-row-cell{
-    -fx-border-color: transparent;
     -fx-table-cell-border-color:transparent;
 }
 
+.spreadsheet-cell {
+    -fx-background-color: -fx-table-cell-border-color, derive(-fx-base, 25%);
+    -fx-text-fill: -fx-text-inner-color;
+}
+
+VerticalHeader > Label{
+    -fx-background-color: derive(-fx-box-border, 15%), -fx-base;
+}
+
+HorizontalHeaderColumn > TableColumnHeader.column-header.table-column{
+    -fx-background-color: derive(-fx-box-border, 15%), -fx-base;
+}
+
+.root #grid .spreadsheet-cell:selected,
+.root #grid .spreadsheet-cell:focused:selected,
+.root #grid .spreadsheet-cell:focused:selected:hover {
+    -fx-background-color: rgb(159, 142, 0);
+}
+
 .status-bar {
     -fx-background-color: derive(-fx-color,-15%), -fx-body-color;
 }