tampons

when you get tampons for Tampax is normal for them to go a lil yellow at the top . Bc & I first got my period back in July & so I just had a box of tampons just sitting there & I went to use them & they were yellow so I opened it up & the blue part that's the leak guard , it was blue , is it normally blue when you've never used it ? I'm so new to the whole period scene Bc this is literally my second time getting it