BLUE TONGUE SKINKS

I own two captive bred eastern BTS. I live in northern NSW and we often get many wild BTS in our yard and verandah. For the last couple of months we have had two juvenile BTS living on our front verandah under two couches. They are both the same size so potentially are siblings. One is a standard color and pattern BTS. The other is unusual as it on mono clothes dark brown with no patterns at all. I initially thought it may be a land mullets but this morning I decided to pick it up to look closer. On close inspection it seems to clearly be a BTS and not a land mullets. I just wanted to know if the mono dark brown in patterned morph is common?

That is not a tiliqua species. I am not familiar with all types in your land but am positive it's not your traditional blue tongue.

Hi it's a naturally occurring pattern less morph of pinktongue skink. Cyclodomorphus Gerrardii