once used aqua to put a grandmothr's flower garden together-as in the path around the blocks.it's turned out very pretty-tho it was more of a robin's egg color.
as to peach-havent seen a shade i like.yellow is ok in small amounts when you can find a decent one.not bird bird yellow-more like butter.i once used that shade along with brown and green for a man's version of a trip round the world.it also had a blue in it i hated.that blue was just a tad thinner than the rest of the fabrics and it wanted to unravel.not a pretty sight.