I experimented with Harlekin’s suggestion and I think I like the results. Here is the redesigned Metal Streak both masked and unmasked (I prefer unmasked).
I think this looks a little more like liquid metal and less like vinyl. Also, I included the effect of the mask coming off which I think worked out well. Oh, the liquid metal is actually nanites Dr. Silver invented that can do almost anything she programs them to do, and she figured out how to make the suit fly by using antigravity (don’t ask me to explain, I’m an artist not an scientist 
).
On a side note, her suit looks very similar to a recent character. Hmm…I wonder why that could be…
