Bad piece of PEX??

See picture below – had a leak a few years ago and the plumber replaced the section with PEX. Redoing my bathroom, and going to sheetrock here now (vanity covers this section), but noticed the color of one of the lines as having a yellow tint to it – whereas the other is more clear. Is this something to be concerned with??

Thank you,

Attached Images
File Type: jpg Pex.jpg (33.5 KB)