Several rabbit questions, please answer!?

I raise Lionheads and Netherland Dwarfs in California so it's really hot in the summer. This causes problems, but we try to take the best possible care of them.

1) Genetic question. I have a Jr. doe out of an Opal and a Blue. I can't tell if she's an Opal or a Blue Self Chin. She has ticking like she should but it's white, not fawn. She has blue eyes, white on her jaw, chest, and around her eyes. She has bands of blue and white with a white stomach. Her grand parents (Opal and Blue) have thrown a Blue Self Chin before but they more commonly throw Opal and Blue. What's your opinion?

2. How do you treat a blowfly bite? Two of my does have been bitten due to the heat. I have isolated them from the rest of my herd. Please don't tell me to take them to the vet. I have people working with me who have veterinary experience. If it comes to it I'll take them to the vet, but it's not yet nessecary. Should I take out the larvae, then clean the bites with neosporian or peroxide? Let me know, please.

3. How much wormer should I give a 3 year old 2-3 lb Lionhead buck? We have Evomectrin (?) wormer. I believe it's oral.

Thank you!