Yes, blue and red for the #45, with heatshrink over the black wire.
As far as the impedance goes, you will want to use the OT-2 transformer, but not quite as-wired in the SEX. The SEX amp uses the transformer to provide an ~8K reflected load to the plate of the output triode, while the Paramour wants to see 4K.
Consequently, for something like an 8 Ohm Orca, you can wire the OT-3 transformer for 16 Ohms to reflect the correct load.
-PB