In reality when you breed Purple to Purple you should get Purple, but there's always that chance of something being in the wood pile. I have always liked the Purples the Spalding Purples are the best looking ones I think, check out the ones at www.texaspeafowl.com
With your hens being with an older male you should get fertile eggs, the chicks will be Purple split to BS unless the hens are split BS it also looks like your male has white flights do you know his parents were.