fix input colours in dark mode

src/components/_dark_mode.scss

@@ -117,6 +117,7 @@
     }
 
     .input-window {
+      .message-input-container {
         input[type="text"] {
           background-color: $dark-background-color;
           color: $light-text-color;
@@ -139,6 +140,27 @@
           color: transparentize($light-text-color, 0.3);
         }
 
+        .emoji-button-container {
+          button {
+            &#emoji-button {
+
+              &:hover {
+                svg path#icon {
+                  fill: $theme-color;
+                }
+              }
+
+              &:focus {
+                svg path#icon {
+                  fill: $light-purple;
+                }
+              }
+            }
+          }
+        }
+
+      }
+
       input[type="submit"] {
         background-color: $dark-theme-color;
         color: $light-text-color;