tweak color scheme to contrast better

layouts/partials/footer.html

@@ -0,0 +1,15 @@
+      <div class="hints">
+          <center>Comandos: <b>ALT</b> + <b>/</b> (buscar) | <b>TAB</b> (navegar resultados) | <b>ENTER</b> (elegir)</center>
+</br>
+            </div>
+<footer class="footer">
+    {{ with .Site.Params.footerHtml }}
+        <span>{{ . | safeHTML }}</span>
+    {{ else }}
+        <span>
+            © {{ now.Format "2006" }} {{ .Site.Params.author.name }}, {{ i18n "powered_by" }}
+            <a href="https://gohugo.io" class="footerLink">Hugo</a> {{ i18n "and" }}
+            <a href="https://github.com/LordMathis/hugo-theme-nightfall" class="footerLink">Nightfall</a> {{ i18n "theme" }}
+        </span>
+    {{ end }}
+</footer>