Improve dark mode checkboxes

Author: Zarel

play.pokemonshowdown.com/style/battle-log.css

@@ -255,6 +255,11 @@ select.button {
  * Forms
  *********************************************************/
 
+.dark {
+	/* we already have custom scrollbars/buttons so this is really just checkboxes */
+	color-scheme: dark;
+}
+
 .label {
 	font-size: 9pt;
 	font-weight: bold;

play.pokemonshowdown.com/style/battle.css

@@ -5,7 +5,7 @@ License: GPLv2
 
 */
 
-@import url(./battle-log.css?v6.5);
+@import url(./battle-log.css?v6.6);
 
 .battle {
 	position: absolute;