Yellow/gray housings on handheld meters are a trademark of Fluke... people see that and think of Fluke.
Sorry, but fsck that. Fluke didn't invent Yellow and they didn't invent multimeters either.
You don't buy a Fluke because it's yellow (at least, I didn't), you buy it because it works well. There's zero likelihood (bupkis, nada, zilch, etc.) that any of Fluke's customers would be confused by a $15 Sparkfun knockoff P.O.S.
Save the talk about brand "dilution" for sugary soda water, overpriced handbags, and jeans that will be out of style in a year or two.
Oh, and fsck the lawyers that come up with this crap too.