Hiya Ken, welcome to IIS
If you tell a Jaycar employee that you want some LED's, they should be reaching for the catalogue and turning to that page before you've even finished asking. I used to push my staff to always consult that chart with customers. Sadly, most Jaycar employee's can't even work out the value of the current limiting resistor for a particular LED.
Unfortunately.. Jaycar, and all retail in genereal, doesn't pay well enough to attract and retain employees with brains and knowledge of their product.