Edelbrock springs 1406 and 1405

Manual states "base calibration" is 5", which is the orange. I've tried to decipher which is which, but these dang springs have color wore off of some of them. See pic.
I thought I saw a blue tinge to the springs that are installed. If it is blue, that's the leanest spring, so why in the heck is it so rich?
Is there something "more" to the spring than the inches of vacuum? Height maybe as well?

Aaron65 said

I think the 1405 comes standard with orange 5" springs in it, so unless you changed them, they might be about right.

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RustyRatRod said

I'll be danged if I can remember. The 1405 is the "performance" version of the 600, so the orange springs would make sense, since they would start to release the metering rods at "about" 10hg, which would be indicative of a mild, non stock camshaft. I "thought" they all came stock with the plain spring, but you may well be right.

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