In my opinion yes (I am not sure), because blackbytes are an example for Fixed denominations assets (see page 42)
other related sites :
#page 1
..There is an internal currency called ‘bytes’ that is used to pay for adding data into the decentralized database…
#page 3
Privacy. … Transactions in bytes (the base currency) in Byteball are equally visible, but there is a second currency (blackbytes), which is significantly less traceable..
#page 5 Native currency: bytes
…Thus, to store your data in the global decentralized database you have to pay a fee in internal currency called bytes, and the amount you pay is equal to the size of data you are going to store (including all headers, signatures, etc)…
#page 6
..Bytes can be used not only for payment of storage fees (also called commissions), but also can be sent to other users to pay for goods or services or in exchange for other assets…
page 43
..In Byteball, we have a private fixed denominations asset blackbytes..