Yes, Color Guard offers two styles of solar post caps: Apollo and Neptune. Both styles are a vinyl material with a metallic/ceramic powder-coat finish and are compatible with the Color Guard aluminum blank posts and post sleeves.
The Apollo Solar Post Cap features 6 lumens of downlighting. The 3" x 3" option is for use with the Color Guard 3" x 3" Aluminum Blank Post Kit and the 4" x 4" option is for use with the Color Guard 4" x 4" Aluminum Post Sleeve.
The Neptune Solar Post Cap features 3 lumens of halo lighting that illuminates on all sides. The 3" x 3" option is for use with the Color Guard 3" x 3" Aluminum Blank Post Kit, and the 4" x 4" & 6" x 6" options are for use with for use with the Color Guard Aluminum Post Sleeve. The 3-5⁄8” x 3-5⁄8” size is for use with a nominal 4x4 wood post, and the 5-5⁄8” x 5-5⁄8” size is for use with a nominal 6x6 wood post.