Can't get to any pics right now (at work) but I'd suggest looking into motley Central American boas. CAs stay smaller and leaner than the common BI and the motley gene in them makes for an even darker snake than most common BI motleys.
I have a male CA motley that is very dark. I've had him for about 3 years now and he was 1.5 when I got him. He is about the size of an adult corn snake. My CA is very docile and easy going, but some CA boas can take some time to tame down, so if you go this route, I'd advise talking to the breeder and asking them to pick out a baby that is calmer.
I paid $200 for my CA motley and thought that a very fair price. There are other smaller boa locality morphs out there that can get dark like leopards, but those are a little pricier. Terrahumara boas (from Mexico) get pretty dark and are very small.
I also agree with the BCL suggestion. There are some lines of BCL that have been selectively bred to be hypermelanistic and anery. If you can get an anery from one of those lines, you should be set for a dark look. They are more pricey (around $400-$800). I just got a pair of russo yellow line BCL and am looking forward to watching them develop. BCL dont' look great as babies and go through a huge color change as they age. To know what you're getting, you need to look at parent pics.
For sunglows, look for lipstick line which tend to keep their contrast better as they age. Know that nothing is really guaranteed with them though, as sunglows can look very different than their parents when they become adults. I would also note that you should look at adult pics of the albino morphs before you decide on getting one. Adults often loose their contrast and develop a yellowish background color (on both suns and moons). Albino morphs can also have many eye issues when they are born, so make sure you purchase from a reputable breeder and see pics of the baby from both sides (to show there are no pop-eye issues).
With any of these, I'd advise going to a private breeder with a good reputation vs. a chain store or buying from a larger outfit (i.e. backwater, LLL, etc.). With localities, you want to make sure you are actually getting that locality and re-sellers have been known to mislable animals.
Reply With Quote