fix branding link dark for gallery

Author: marjisound

dotcom-rendering/src/paletteDeclarations.ts

@@ -2024,7 +2024,20 @@ const brandingLinkLight: PaletteFunction = ({ design, theme }) => {
 const brandingLinkDark: PaletteFunction = ({ design, theme }) => {
 	switch (design) {
 		case ArticleDesign.Gallery:
-			return sourcePalette.neutral[86];
+			switch (theme) {
+				case Pillar.News:
+				case Pillar.Opinion:
+				case Pillar.Sport:
+				case Pillar.Culture:
+				case Pillar.Lifestyle:
+					return pillarPalette(theme, 500);
+				case ArticleSpecial.Labs:
+					return sourcePalette.specialReport[500];
+				case ArticleSpecial.SpecialReport:
+					return sourcePalette.specialReport[500];
+				case ArticleSpecial.SpecialReportAlt:
+					return sourcePalette.news[500];
+			}
 		case ArticleDesign.Standard:
 		case ArticleDesign.Review:
 		case ArticleDesign.Explainer: