Fix #2101: Improve contrast of text in control box

CHANGES.md

@@ -25,6 +25,7 @@ Soon we'll deprecate the latter, so prepare now.
 - #2002: fix rendering of `muc_roomid_policy_hint`
 - #2006: fix rendering of emojis in case `use_system_emojis == false`
 - #2028: Implement XEP-0333 `displayed` chat marker
+- #2101: Improve contrast of text in control box
 - The API method `api.settings.update` has been deprecated in favor of `api.settings.extend`.
 - Filter roster contacts via all available information (JID, nickname and VCard full name).
 - Allow ignoring of bootstrap modules at build using environment variable. For xample: `export BOOTSTRAP_IGNORE_MODULES="Modal,Dropdown" && make dist`

sass/_variables.scss

@@ -203,6 +203,8 @@ $mobile_portrait_length: 480px !default;
     --chat-correcting-color: #FFFFC0;
     --chat-head-text-color: #AAA;
 
+    --controlbox-text-color: #DDD;
+
     --chat-info-color: var(--subdued-color);
 
     --chatbox-border-radius: 0px;