For colouring wool blocks.
rose red dye and bonemeal
You can craft things with Lapis like: A Lapis Lazuli block, light blue dye, cyan dye, purple dye, magenta dye and blue wool. You can check out Minecraft Wiki for some help and tips.
no
No, but you can dye it's collar
Burn cactus in a furnace.
for medical uses and dye
You cant unfortunately but there maybe a mod out there.
You can't. But with resource packs or mods you can.
You can dye wool or sheep black with it.
Burn cactus in a furnace.
Orange dye can be made by putting yellow dye (from crafting yellow flowers) and red dye (from crafting red flowers) on the crafting table.
Currently the only use for ink sacs on Minecraft is for dying wool. Using a raw ink sac on wool turns the wool into black wool. Using the ink sac with one bone meal creates gray dye and using it with two bone meal makes light gray dye.