The Rams and Colts uniforms of the 1960's and into the '70s were very similar. The primary difference was Baltimore had a White helmet and Blue logo, while the Rams had a Blue helmet and White logo.
The simplicity of those uniforms showed well on Black & White TV, which was most common back then.
One of the reasons the Rams changed in 1973 was the conversion by most house-holds to Color television.
Don't know if any of this is interesting but the most obvious point of this post is that ... I am Fucking Old.