Any ideas what I could expect some of the chicks from them to look like?
I'm fairly sure the rooster is leaky black with one barring gene, and has both the gold and the silver genes. Since he is a cross of Crele Penedesenca x Ameraucana, he is also carrying the genes that give the duckwing pattern (what Crele would be if it didn't also have barring.)
Given that, without paying attention to individual hens, I would expect about half of his chicks to be black and about half of those to have white barring. Depending on the hen colors, that could leave up to half of chicks showing some pattern of gold & black or silver & black, with half of them also showing white barring over their other colors.
The barring can appear on sons or daughters, so its not useful for sexing chicks by color.
He's probably got one gene for muff/beard on the face, so he will give that to half of his chicks. From clean-faced hens, about half the chicks should also be free of muff/beard. From hens with muff/beard, either 3/4 of chicks or all chicks will have muff/beard.
From specific hens:
Some kind of EE that lays bright blue eggs (the ugly bald black one)
From each black EE hen:
Either 3/4 or all chicks black, depending on the genes the hen has. Half of the chicks should have white barring over their other coloring, the other half not. The "black" chicks are likely to show some leakage of other colors as they grow up. If only 3/4 of chicks are black, the others will probably have some pattern of gold & black or silver & black.
Two other EEs. These are the only photos I can find of them so far, I'll keep looking
Dark one in front, I can't decide about her coloring. If she's black with leakage, same predictions as the other black EEs. But I think she's got some pattern of black and gold, just heavy on the black. If that is the case, about half of chicks will probably be black anyway (from the father), but the other half will show some pattern of gold & black or silver & black. Half of chicks should show white barring, which means about half of each color/pattern chicks and half of each sex of chicks.
The lighter brown one in back will probably produce black chicks (again, the father giving it to half of them), and the other half should have patterns of gold & black or silver & black. Their coloring will probably include a lot of the gold or silver and not much black, as compared with chicks from hens that show more black in their own coloring. Again, half of all chicks should have white barring.
Similar to the previous few EE hens: about half of chicks half, the other half gold & black or silver & black, with about half of each color showing white barring too. From this hen specifically, all sons will be silver, so any gold chicks must be daughters. But that only works if you know which chicks came from eggs she laid instead of from any other hen. From any hen with gold, using that rooster, you should get approximately equal numbers of gold and silver in both sexes, so no color-based sexing is possible for them.
I'm leaving in a few of my other hens too, a splash Silkie, a dark blue Silkie cross (parents are the splash Silkie and the above Olive Egger rooster), a buff brahma hen, a splash blue laced red Wyandotte, a splash Orpington cross hen (parents were a splash English Orpington and the splash blue laced red Wyandotte hen) and the Easter eggers from the first post. Thanks!
With the Splash Silkie:
About half of chicks colored like the blue Silkie-cross you already have, and the other half with white barring added to that color. Some chicks may show leakage of other colors as they grow.
With the blue Silkie cross:
At least 3/4 of chicks "black" and maybe all of them. Half of those "black" chicks actually blue. If there are any that are not "black," they will be about 1/4 of the total, and will show some pattern of gold & black or silver & black. Half of all chicks will have white barring over their other colors/patterns.
With the Buff Brahma hen, same color options as the light brown Easter Egger above.
With the Splash Laced Red Wyandotte, half of chicks "black," other half showing some amount of pattern in gold & black or silver & black. The pattern may look something like lacing or it may not. All "black" actually blue, whether it's covering the whole bird or whether it's in a pattern like lacing. Half of all chicks showing white barring.
With the Splash Orpington-Wyandotte mix: 3/4 of chicks "black," other quarter showing some amount of pattern in gold & black or silver & black. Compared with chicks from the pure Wyandotte, these chicks are much less likely to show a specific pattern such as lacing, and more likely to just have the colors arranged in a less-tidy way. All "black" actually blue, and half of all chicks showing white barring.
Would any crosses be particularly cool looking or fun? Just plain dark or barred colored chickens aren't super exciting to me, unless they're unique somehow.
Many chicks will show muff/beard on their face. I don't know if that looks cool to you.
From the Silkie-cross hen, half of chicks should have a crest on their head, and most chicks will have some amount of feathers on their feet. If she has an extra toe on each foot, about half of her chicks will too.
For colors, I'd focus on hatching eggs from the hens that are not black all over. Blue hens will give blue to half of their chicks, splash hens will give blue to all their chicks, and hens with other colors will produce about 50% chicks that show colors/patterns when you mate them with that rooster.
So the solid black hens are your worst choices for chicks that have interesting coloring.
If the rooster has one blue egg gene, he will give that to half of his chicks.
With hens that lay brown or white eggs, about half of chicks will lay green or blue eggs (probably all greens not blues, given the rooster's ancestry.)
With hens that lay blue eggs, they will also be giving the blue egg gene to their chicks. So you will get either 3/4 of chicks or all of chicks having a blue egg gene from those hens (depending on whether the hen has one vs. two blue egg genes.)
