In the BelleTress line, the closest shade to Jon Renau's Palm Springs Blonde is going to be Bombshell Blonde or Champagne with Apple Pie
Below, I have included the links to Heather's videos showcasing these colors:
Bombshell Blonde: https://www.youtube.com/watch?v=ItEqq470ra4
Champagne with Apple Pie: https://www.youtube.com/watch?v=O2phCVF2sgM
I hope this information has been helpful for you!