One of my favourite pink and yellow photos is of a metal sculpture of Don Quixote up against a yellow wall with a pink bougainvillea on the end of his spear.
I liked it so much I used it for the cover of a series of Spanish course books that I’m working on.
Photoshop Overlays with Pink and Yellow.
Then I played with it. Here are some current explorations of pink and yellow overlaid with flowers, mostly dahlias. This is the cool pink version.
This is the warm pink (coral) version. I added in a shot of bougainvillea at the top.
Photo Collages and Overlays with a Pink Demon Monkey.
In Bangkok I spotted these pink waterlilies in a large pot and next to them was a wall painted with a pink demon monkey. When I got home I couldn’t resist putting them together. This was probably my first photo collage. 
Burmese woman overlaid with a tattoo of the pink monkey demon. (I really like this demon!)
Playing with Photo Apps.
Finally some pink and yellow flowers run through photo apps, such as this orchid. 
A pink peony macro.
A pink lotus. 
More of Cee’s Fun Foto Challenge: Pink & Yellow.
Batz Gallery 
Oh I so adore your response to this yellow and pink challenge. Thanks for playing along 😀