This is a rough idea of what I may use. I’m thinking I could colour the ground cloth in a pale mauve, stitch some ‘lines’ in a dark blue, embroider & bead textural shapes, one in purples, the other in reds. The colour scheme is analogous: red, blue, purple. Then, for contrast, I’d add the complementary colour of yellow into the mix; some gold perhaps towards the centre.
(this design is the result of a combination of designs I found on Google images)