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Mine looked like that 2-3 months ago but I refilled it and haven't had a drop in level since, if I were you I would try the same and if it drops below again check for the valley plate leak.
Could possible be the valley plate leak, which you won't be able to see. If that's the case it'll be covered under the powertrain warranty. Just bring it to the dealer and tell them your coolant levels have been dropping and tell them you want them to check under the powertrain warranty.
My level was under low, when I had this issue diagnosed.