Tropicals & Tender Perennials: One plant...two different blooms?, 1 by SRQHoyas

SRQHoyas wrote:
My Hoya tjadasmalangensis has two totally different blooms on the same plant. I noticed the peduncles were red and yellow but thought somehow the lighter of the two would adjust. Is this a normal thing for any or all hoyas?
This plant is mature and the yellow blooms are happening on one stem..full of only peduncles...maybe 15...all getting ready to open.
The reddish blooms are happening on the rest of the plant.
Any thoughts??