Your description does not strike a bell with me, and I am not familiar with the piece that you describe. In answer to your question, purple, green and white in England were only the official colors of Emmeline Pankhurst’s Women’s Social and Political Union. Numerous other organizations also had their own official colors, the most prominent being the red, green, and white of the National Union of Suffrage Societies. Offhand, I do not recall any major organization using red and black, and I suspect that these were simply added on by the owner as decorative enhancement. Whether this tambourine was an actual suffrage piece or put together later, I could not tell you. Is the wording “Votes for Women” printed or hand done?