You have to open ninja morph and click new project.
Then click on system /framework/then framework res.apk, it will extract the apk.
Next you have to go into a file explorer, I use es file explorer.Click on android themes folder then workspace/framework res/res/drawable Xhdpi.
Then in that folder you will find the air command files.There are 10 files in there you need to replace.
Now go to your downloads and extract the air command zip you want.It will put a folder in your downloads of the extracted zip.In the extracted folder keep clicking until you can't go into anymore folders.Ill attach a screen shot of it with the 10 files .
Now copy those 10 files into workspace/framework res/res/drawable Xhdpi. It will ask you to replace the ones you have in there, just click yes.
Now your good to go. Open ninja morph again , make sure it restarts the app.Click on finish projects and you'll see framework res apk.Click that and it compiles file again.It will ask a few questions.I don't remember what but you need to replace that file you changed so I think that is 1 question. I think the other one is if you want to zip align it.I click no. I would make a copy of your framework apk before you change just in case something goes wrong but it also makes a backup in the Android themes folder. If you need help feel free to pm me.
I attached screen shot of the minion one I use and a screen shot of what files you need to copy.