(theme) improve dark mode color

Author: antoine92190

src/themes/index.js

@@ -52,8 +52,8 @@ export const defaultThemeColors = {
 		sidemenuBgHover: '#202024',
 		sidemenuBgActive: '#1C1D21',
 		sidemenuColorActive: '#fff',
-		menuBg: '#26272e',
-		menuBgHover: '#1C1D21',
+		menuBg: '#687b8f',
+		menuBgHover: '#5d6d80',
 		messagesBg: '#1C1D21',
 		messageBg: '#46586b',
 		messageMeBg: '#4fb381',