Set dark colors & update charts style

templates/stats.hbs

@@ -38,6 +38,7 @@
             </h2>
             <h2>Andel per timme:</h2>
             <div class="chart_histogram">
+                <div class="chart_histogram_legend">{{this.bars_max}}&percnt;</div>
                 {{#each this.bars}}
                 <div class="chart_histogram_col">
                     <div style="flex-grow: {{this.2}};"></div>