Implementing the "theme-color" meta tag.

Used by Android >= 5.0 to make the top bar colored.

Reference: https://developers.google.com/web/updates/2014/11/Support-for-theme-color-in-Chrome-39-for-Android

modules/setting/setting.go

@@ -114,6 +114,7 @@ var (
 	AdminRepoPagingNum   int
 	AdminNoticePagingNum int
 	AdminOrgPagingNum    int
+	ThemeColorMetaTag    string
 
 	// Markdown sttings
 	Markdown struct {
@@ -407,6 +408,7 @@ func NewContext() {
 	AdminRepoPagingNum = sec.Key("REPO_PAGING_NUM").MustInt(50)
 	AdminNoticePagingNum = sec.Key("NOTICE_PAGING_NUM").MustInt(50)
 	AdminOrgPagingNum = sec.Key("ORG_PAGING_NUM").MustInt(50)
+	ThemeColorMetaTag = sec.Key("THEME_COLOR_META_TAG").MustString("#ff5343")
 
 	sec = Cfg.Section("picture")
 	PictureService = sec.Key("SERVICE").In("server", []string{"server"})

modules/template/template.go

@@ -98,6 +98,9 @@ var Funcs template.FuncMap = map[string]interface{}{
 		return strings.Replace(strings.Replace(str, "%", "%25", -1), "#", "%23", -1)
 	},
 	"RenderCommitMessage": RenderCommitMessage,
+	"ThemeColorMetaTag": func() string {
+		return setting.ThemeColorMetaTag
+	},
 }
 
 func Safe(raw string) template.HTML {