Copper Sulfate won't give green smoke, you can better use "Methylene blue" for blue smoke.
all cobalt (+ 2) salts are red but with sulphate cobalt shows pinkish red colour.....
This is because sulphate is a thing that just dissolve in the water and changes the colour.
this makes sodium sulphate and CO2
A precipitate is formed which has a light blue colour. After shaking, the precipitate re-dissolves forming a dark blue solution.
aluminum sulphate is colourless
You have to specify the sulphate of which element.
Copper (II) Nitrate burns in a Green flame
The color of blue litmus in ammonia will remain to be blue . However the color of red litmus will change into blue. This is because of the basic nature of ammonia.
Basic colour of C.J. is purple blue
pink
No colour
dark green (but orange - brown if left standing)