Both are common on Emma, the red and yellow a bit less so, no difference in value.
Blue base w/ a red patch are extremely rare on PPP comics and will demand a premium, there are other rare colors but red & blue are @ the top of the chart.
Even chipped it still brought $5000.oo
THis is before they realized it was chipped :
As always condition plays the biggest roll in final value, double or even triple for a mint example as noted by the great price difference in the SKEEZIX marble before the chip was noticed.