The red color 5mm flat top LED is a vibrant color that you can't go wrong with. This size led is commonly used in many custom projects, car lighting,
How Does a 5mm LED Work? - LEDSupply Blog
LED Red 3mm Diffused General Purpose (10-Pack) - ProtoSupplies
10pcs 5mm Pre-Wired Flat Top Wide Angle LEDs Ultra Bright LED Emitting Diodes Bulb Lights 3V 5V6V 9V 12V 24V 36V 48V 110V 220V - AliExpress
100pcs X Super Bright 5mm Flat top led Light lamp red Wide Angle 120-140 deg : Industrial & Scientific
5mm Flat Top Concave Wide Angle Cool/Clear White LED - Similar to Christmas LED Lights (Pack of 50) : Industrial & Scientific
Unmounted LEDs
What Shape of LED Should I Use for My Project? - Make
Cheap 100pcs 5mm Flat top white Red Pink Yellow Blue Orange Warm White Wide Angle Light lamp LED
12v 5mm Flat Top Wide Angle Pre-Wired LEDs