For best results you should use a deck stripper and pressure wash off. Brightener last.

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Try 50/50 but which color to add is really up to you.

Thanks for the response. How much of of a pigmented TWP would I add the the 5 gallons of clear, and what color would you recommend to give some protec...

No, you cannot add pigment to the TWP. You can mix TWP colors together if you like. Add a pigmented TWP color into the Clear.

Thanks! We'll let everyone know how it turns out and how the deck survives in the MW heat.

Either would perform the same.

Using a solid stain would be the best way to match this. You will need to let the new wood weather: And remove the paint off the deck by sanding:

Yes, that is stripped. Make sure to brighten the wood.