The gloves you have with the cuffs attached look fine to me. For your jumpsuit, you can just "dip" it in a very dilluted solution of water and blue dye in a tub. Thats what I did with mine & it turned out great. Just make sure to to use very little dye at first. Dip it once, let it dry & see how it looks. If you need to, dip it again for a longer period of time if you want more blue, or you can add a bit more dye if you decide you need it. Just go very slow, and take yoour time. Its much easier to add color than to rmove it IMO. 
Most importantly...make absolutely shure you have the dye completely dilluted & mixed up when you dip the thing!!!!! Otherwise, some dye will settle on the bottom and you will get a few very dark blue spots on it. If possible, don't let the the coverall touch the bottom of the tub. Also, Make shure the coverall is completely dry first before you decide if you've got it blue enough. It will look alot darker when its wet. Should be a great coveral for you
Damian
edit: probably want to use rit royal blue, (very sparingly) and get the liquid stuff rather than the packets if possible
