Permanent protecter/sealant for ironbark decking?

Hi everyone, my missus has asked me to build a small patio out the back (3m x 3m x 2.3m) in the next 5-6 months, and I have a bought a heap of Ironbark (150mm x 25mm mainly red) for the floor that is now drying some more in my shed. So after I joint and thickness it, I would like to seal it with something that will help keep the reddish colour and protect it from fading to grey more or less permanently if possible. Redoing the floor every so often is not my idea of fun and I would like to do it once and then not have to worry about it (if that is possible). It will have a steel RHS frame and colour bond roof but will still get some exposure to light and rain.



Is there such a product (preferably glossy to highlight the grain and colour) out there that will do this?



Cheers



Ed.