What reaction can I expect at my job?

I just recently got hired for an aircraft part repair company and they use a short sleeve dress code since some areas of the building are hot(found out after first day of wearing long sleeve) and was just wondering I will be wearing short sleeve tomorrow what should I expect from my Boss? Im not really worried but I just want to anticipate the reaction. The visible tattoo is nothing offensive its a forearm portrait and the companny guildlines says nothing of visible ink but what should I expect to hear tomorrow?