From 058b4ba658668a75d6700c8914d42918a363779c Mon Sep 17 00:00:00 2001
From: Bram Kragten <mail@bramkragten.nl>
Date: Tue, 17 Sep 2019 14:08:48 +0200
Subject: [PATCH] Fix theme rgb creation (#3738)

---
 src/common/dom/apply_themes_on_element.ts | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/common/dom/apply_themes_on_element.ts b/src/common/dom/apply_themes_on_element.ts
index 029ef1d3cc..22b13893c0 100644
--- a/src/common/dom/apply_themes_on_element.ts
+++ b/src/common/dom/apply_themes_on_element.ts
@@ -44,14 +44,15 @@ export default function applyThemesOnElement(
       if (key.startsWith("rgb")) {
         return;
       }
-      const rgbKey = `--rgb-${key}`;
-      if (theme[rgbKey] === undefined) {
+      const rgbKey = `rgb-${key}`;
+      if (theme[rgbKey] !== undefined) {
         return;
       }
-      element._themes[rgbKey] = "";
+      const prefixedRgbKey = `--${rgbKey}`;
+      element._themes[prefixedRgbKey] = "";
       const rgbValue = hexToRgb(theme[key]);
       if (rgbValue !== null) {
-        styles[rgbKey] = rgbValue;
+        styles[prefixedRgbKey] = rgbValue;
       }
     });
   }