Working on making a nice hot pink LED for the wife, and this electrical math STILL befuddles me.

RBGW 10W LED

7.4 Source voltage
2.77 diode forward voltage
1000 diode forward current (mA)
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4.7 Watt capable or greater 4.7 ohm resistor

So if i'm reading the correct, i would apply this to BOTH the red and blue LEDs, then add another 5ohms to the blue resistor? I'm not exactly seeing 10-ohm resistors in the TCSS shop... help!