Al's Sporting Goods has a few colors of the Smith Prospect Jr Helmet on sale for 78.93 (reg $130). Matte Black, Matte Rise (Red) and Matte Smokey Blue. They can also be found sold by Al's on Amazon.
From Smith website:
Lightweight in-mold construction
Aerocore construction featuring Koroyd
Regulator adjustable climate control
MIPS system available in all colors
Introducing the all-new Prospect Jr. featuring the world's first helmet liner system that grows as you do. Utilizing Smith's Grow With Me™ dual-stage liner system, the Prospect Jr.'s stage one and stage two liners cover the largest head size range in kid's helmets today. Tested and developed with MIPS® rotational protection system and ventilated Aerocore™ protection featuring Koroyd® - the Prospect Jr. refuses to sacrifice protection, year after year.