Stallion Badge on Bridle

Hi,

I need to get one for Taktur, our Icelandic horse stallion.
I think it is polite to wear one in company and I know it is only The Rules for some occasions, but even so.
Colour - there seem to be different ones. Is it white for dressage or just whatever you have?
Please help.

I didn't find the right solution from the Internet.

References:
www.trotonline.co.uk/forum/showthread.php?58661-Stallion-Badge-on-Bridle
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Thanks