The way to get shade robes are by killing shades. Go to the bottom floor of the stronghold of security and kill the shades. They should drop a robe, they can drop both the bottom and top.
you get ghostly robes after doing the quest desert treasure and then doing miniquests after then getting the robes as rewards
make blightleave robes
The quest Shades of Mort'ton is required to wear necromancer robes.
no. only capes can be dyed.
Shade Robes provide a small amount of prayer bonus, less than Monk Robes. They're untradeable and can be stored in the costume room.
Imphide robesBatwing robesSpider silk robesWizard robes (both black and blue outfits)Infinity robesMystic robes
For the priest robes you go to the clothes shop in varrock and they sell em. for monks robes you go to the monostary (prayer guild) and upstairs if you have 32 prayer you can get them free from a table.
I'm not sure what you mean, but I'm guessing you are talking about Mystic Robes.
not at the moment, in a future jagex might make them reobtainable but i doubt it
you must complete desert treasure, and then a sidequest unlocked by DT
They start with 100 charges and become fully degraded after 100 uses.
There are no Grim Reapers clothes in RuneScape. There is just 'Shade Robes' which look very similar. You can buy shade robes from other players, via either the grand exchange or by trading.