New A: for your Q: Any suggestions for a blue bike for a 4 year old boy ? http://tinyurl.com/clhcwf

This blue Huffy boy's Diego 10" bike at Sears has soft ride tires, easy step-over frame, rear learning handle, front plaque and fenders. Comes with training wheels. Dimensions: 29" x 18" x 25" Warranty: Lifetime Frame &fork/6 month on all other components.

Or Amazon has an Adams Run Bike Boys in Blue. Helps to develop balance and motor skills and speeds up the learning curve to transition to a 2 wheeler. Great learning tool as an alternate to training wheels. A fun alternative to a sidewalk bike or tricycle. Long saddle for multiple sitting positions. Adjustable saddle height to fit a wide range of children from 2 1/2 to 7 years (small) old. Needs training wheels purchased separately.