hitoriko,

I'll answer your PM here as your inbox is full.

TODA B16A/B18C springs are not painted (at all)
The yellow painted springs are OEM ITR/CTR Intake springs / & the blue painted springs are OEM ITR/CTR exhaust springs.
These are fine to go with the CTR/ITR cams you have.
My guess is you have the leftovers from a B-Series cam swap, & the springs are in the Toda box.

Also, there is no such thing as a B-Series Toda Ti retainers,
This is a myth originating from less than well informed magazine journalists etc,

So use Supertech, Portflow or SK2

Cheers

Adrian