Adapt more css for color theme

frontend/src/app/components/accelerate-preview/accelerate-fee-graph.component.scss

@@ -10,7 +10,7 @@
     width: 100%;
     height: 100%;
     position: relative;
-    background: #181b2d;
+    background: var(--stat-box-bg);
 
     .bar {
       position: absolute;

frontend/src/app/components/accelerate-preview/accelerate-preview.component.html

@@ -38,7 +38,7 @@
           <small *ngIf="hasAncestors" class="form-text text-muted mb-2">
             <ng-container i18n="accelerator.plus-unconfirmed-ancestors">Plus {{ estimate.txSummary.ancestorCount - 1 }} unconfirmed ancestor(s)</ng-container>
           </small>
-          <table class="table table-borderless table-border table-dark table-accelerator">
+          <table class="table table-borderless table-border table-dark table-background table-accelerator">
             <tbody>
               <tr class="group-first">
                 <td class="item" i18n="transaction.vsize|Transaction Virtual Size">Virtual size</td>
@@ -87,7 +87,7 @@
       <h5>Acceleration summary</h5>
       <div class="row mb-3">
         <div class="col">
-          <table class="table table-borderless table-border table-dark table-accelerator">
+          <table class="table table-borderless table-border table-dark table-background table-accelerator">
             <tbody>
               <!-- ESTIMATED FEE -->
               <ng-container>

frontend/src/app/components/accelerate-preview/accelerate-preview.component.scss

@@ -110,3 +110,7 @@
 .item {
   white-space: initial;
 }
+
+.table-background {
+  background-color: var(--bg);
+}