They specify tan on their site for all the F53's with 19 or 22.5" wheels with the V10
"
STEERING CONTROL (Tan)
Safe-T-Plus high-performance steering controls are designed to reduce over-steering your vehicle making it easier to drive to your destination.
Safe-T-Plus is perfect for Class A motorhomes with a Ford Chassis with V-10 engines and trucks with power steering."
The Blue is specified for :
STEERING CONTROL (Blue)
Safe-T-Plus high-performance steering controls are designed to reduce over-steering your vehicle making it easier
to drive to your destination. Safe-T-Plus is perfect for Class A Motor Coaches with solid I-Beam style axle (Freightliner, John Deere, Oshkosh, Gillig, Spartan, Magnum, Roadmaster, Workhorse, Blue Bird, etc.) and
over-the-road trucks with power steering.
Weird that their site says one thing and advice says another. But looks like the blue is more heavy duty so it couldn't hurt.
I have the Roadmaster Reflex Stabilizer RBK9 which fits all late model F53/V10 chassis. About $325 for bracket & stabilzer package. Happy with it:
http://www.roadmasterinc.com/pdfinst/RBK9.pdf