Hello Danish,

I believe that the red that you are refferring to is the red as seen on the inside of the vessel. This red is the copper after the patina was applyied hot- a bit of fire scale. The patina used on the outside of the vessel is: Liver of Sulphur base with ferric nitrate over the top. I added the liver of sulphur to the piece and used a small propane torch to heat the copper. This was then steel wooled and reapplied repeatably until the liver of sulphur black was even in color. Then the same method was used with the ferric nitrate. Heat it slightly and spray it through a spray bottle as a mist for a fine even coat. Repeat until even. Once the patina was applied I lightly steel brushed and then waxed the piece. All of the patina applications were done outdoors. Chemicals are almost always dangerous and care should be taken not to inhale them, let them touch your skin,or get into your eyes- wear saftey glasses.
Here is a list of a few patina books that you may be interested in purchasing. The books are: The Colouring, Bronzing, and Patination of Metals by Richard Hughes and Michael Rowe. Japanese Patinas by Eitoku Sugimori. Patinas for Silicon Bronze by Patrick V. Kipper. I also occasionally use patinas from the book From Clay to Bronze by Tuck Langlund. These books offer a great resource in the way of chemical safety, hazards, and patina recipes/results.
There are a few "RED" patinas that you can try- (these are for copper and this particular recipe is taken from The Colouring, Bronzing, and Patination of Metals by Richard Hughes and Michael Rowe)
Recipe 3.1 page 166
Red semi-matt. (A) Copper Sulphate 25gm
Water 1 litre
(B) Ammonium Chloride 0.5gm
Boiling Immersion (A) 15 minutes
Boiling Immersion (A+B) 10 minutes
The article is immersed in the boiling copper sulphate solution for about 15 minutes or until the color is well developed. It is then removed to a bath of hot water, while the ammonium chloride is added to the colouring solution, and then reimmersed. the color is brightened and tends to become more red. After about ten minutes the article is removed and washed in hot water. If immersion is prolonged a bloom of greyish green patina will tend to form, which may need to be removed with a soft bristle brush. The article is dried in sawdust and finally wax finished. This is a fairly easy recipe, but please note: Copper sulphate CuSO4.5 H20 is harmful if taken internally. Contact with the eyes and skin should be avoided. Also, Ammonium chloride NH4C1 is harmful if taken internally.
You can also play with fire scale, but unless done perfectly- it most often looks horrible and unfinished.
Hopefully this information helps answer some of your questions-
Sincerely, David Barnhill