I am making labels for bottles of ejuice (liquid for e-cigarettes). Some of the flavors my boss wants are from brands such as mountain dew, gatorade, maralboro, redbull, etc. I don't want any trademark problems so I changed the logos and names slightly so they're not the same but I think it will still be a problem because they can still be confused with the actual brand. Now I want to take off the logo and simply put something like "mountain dew flavor" or "red bull flavor" using the name but not the logo. Is that allowed or can I change the spelling to make it legal, for example changing mountain dew to Mount and Do.