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.
Here is an awesome photo our lovely blogger Kathleen took comparing Bombshell Blonde and Champagne with Apple Pie side by side:
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