That's a good question. I put mine outside in a TON of sun, and it's much more purple, but much less mass also, leaves dying as fast as they grow. I think the soil has broken down more quickly than I anticipated, would have been better if repotted or even just up-potted before coming inside, still in a 4" pot. I'm sure we'd both like to have both - more leaves that are also more purple.

I think yours looks really good, I put one out in the summer & it fried,and it wasnt even in direct sun, I now have great success growing strictly indoors.

Inside to out side transition should be easy enough for you, it's the out side to inside later this year that might not go as well.
Looks good now if all grows as expected outside over summer do you have the height or space in the in the hot house for fall ? winter ?

Ive had one for about 3 years and it grows more viney then bushy. I do not reccomend putting it outside at all. although the more sun it gets the more purple it gets. make sure it gets plenty of light in a nice window. This plant Loves water too. I have had mine near death a few times and learned my lessons. Do going outside, give enough sun and water, and never cut it way down when taking cuttings or pruning it!

Hi Mike, your plant looks very healty and pretty...I could never grow one of those....mine away grew spindly and few leaves...good job....linda