Color is not claimed as a feature of the mark.
The mark consists of The word "Phi", with the letters arranged in a way that: the "dot" of the letter "i" is the "Phi" symbol itself, with no respect to whether the "Phi" symbol is uppercase or lowercase; or where the characters "p", "h", "i" and "(the Phi symbol)" all exist together with no other letters or characters, to symbolize the name of a currency or monetary system or medium of exchange.