Tropicals & Tender Perennials: ?about color change in the bloom process, 1 by Ginger_H

Ginger_H wrote:
Being my first year to have brugs,with only one so far blooming,I am finding them/it fascinating. When the bloom starts to emerge from the calyx it looks yellow,then white. Once in bloom the outer edge is pale pink but darkens to peach(?). Had one open yesterday the way I'm used to seeing with 2 on the way. One is looking yellow while the other is partially yellow and peach. Is this somewhat normal or a fluke? It'll be interesting to see how it looks when it's open all the way. First pic is the one showing yellow.