They still do pink bats on Mothers Day and blue wristbands on Father's Day.
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The thing about the uniforms is I don't think they are decided upon by the actual MLB until right at the beginning of the season or close to it. Meaning that it would be beyond the control of SCEA to know beforehand what the jerseys will look like. Also, I seem to recall (sorry I've searched and couldn't find) a similar topic talked about a few years ago and the comment was made by SCEA that the MLB won't allow them to use any of the special jerseys/hats (Memorial Day, 4th of July, now Mother's/Father's Day, etc...)