Stop looking for an alternative - these 5mm Orange LEDs are what you're looking for! These are bright LEDs that can withstand the 5V output of an Arduino without a series current limiting resistor. Although, it is still advisable to use at least 220Ω to prevent accidents from happening. You can use them for power indication, pin status, optoelectronic sensor interfacing, and many more. 

Specifications:

• Diameter: 5mm
  
• Voltage: 3.1

Inclusions: 20 x 5mm Orange LEDs

Documents: None