Fixing SpeedDial styles

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

src/renderer/components/+catalog/catalog-add-button.scss

@@ -5,5 +5,20 @@
 
   .MuiFab-primary {
     background-color: var(--blue);
+
+    &:hover {
+      background-color: #317bb3;
+    }
+ }
+}
+
+.MuiTooltip-popper {
+  .MuiTooltip-tooltip {
+    background-color: #222;
+    font-size: 12px
+  }
+
+  .MuiTooltip-arrow {
+    color: #222;
   }
 }