Homozygous Indigo?

[TheWantedOutlaw]

Just wondering if anyone could shed some light on this color.. its possible its an illegitimate offspring.. but they were in and individual breeding cage about 2 weeks before laying.. so, ya just a bit unsure.. the Dad is a black self, his dad (grandpa) is a black self and his mom (grandma) was an opal check. The mom is an indigo check, her dad was an indigo bar and her mom was a blue check. Not sure what other modifiers are present in the indigo bar (grandad to offspring on mom's side) and the opal check (grandma on dad's side and great grandma on mom's side). I'll post pics of parents and grandparents asap. Any info would be appreciated. Thanks.

[TheWantedOutlaw]

Here is the Parents