Stamps colours - Printable Version

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Stamps colours - GGelinas - 16-04-2026

I found that Canada 1930 stamps have many variations in colours not really well defined in Unitrade. An example, Unitrade #89, King Edward VII 1c stamps should come in green, blue green, yellow green, dark green just to mention a few. So how do you find which one is which. Unitrade #195, King George V Medallion issue, some say it comes in dark green, some say dark green, myrtle green, green and coil in deep green, while other call them myrtle green, deep myrtle green or deep dull green.
OK, so how do do it.  I do not know.  I have mainly used stamps and a few MNH that could guide me a bit.  

I tried a software called Sleuth.  One panel looks like it is giving me some information but the software does not have any help to decipher the colour reports it gives me in Black and white.  It is not supported.
iPhone Photos doe not work for me.
I tried Nikon photo software but my version id old and was intended for a PC not MacBook.
I could try Photo shop to remove known colours like green and see what is left (On my todo list as I must lease the software).
It was suggested that I try PERFOMaster 4000.  Very similar to Sleuth.  It allows one to created a spectrum of colours and it calculates deviations from that template. Meaning if my reference is green, it might highlight calculate a blue deviation the second stamps that is probably blue green. (I WILL TRY this one in May 2026).

Other suggestions?

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RE: Stamps colours - Hugh - 16-04-2026

Hi Gilles ... 

I can't be of much help, sorry. My eyesight has never been my friend when it comes to colour varieties on stamps. So, it's not something I ever looked at very closely (bad pun)

Good luck. Would you be interested in writing a short item for the club newsletter on your colour work ... and about your work with Image Sleuth and some of the other programs you use?

Cheers, Hugh

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