style: Modify toolbar dark theme.

Author: jaywcjlove

src/components/ToolBar/index.less

@@ -18,15 +18,16 @@
       border-radius: 2px;
       transition: all 0.3s;
       &:hover {
-        color: #06c;
-        background-color: #e8e8e8;
+        color: var(--color-accent-fg);
+        background-color: var(--color-neutral-muted);
       }
       &.active {
-        color: #06c;
+        color: var(--color-prettylights-syntax-constant);
+        background-color: var(--color-neutral-muted);
       }
       &:active {
-        color: #6a57ff;
-        background-color: #dadada;
+        color: var(--color-danger-fg);
+        background-color: var(--color-neutral-muted);
       }
       svg {
         vertical-align: middle;