WhatsApp Channel check marks will soon turn blue, instead of green, according to a feature tracker. As a result, an upcoming version of WhatsApp will change the green check mark to the blue one found on Meta’s Instagram and Facebook platforms.WhatsApp Channel check marks will soon turn blue, instead of green, according to a feature tracker. As a result, an upcoming version of WhatsApp will change the green check mark to the blue one found on Meta’s Instagram and Facebook platforms.