My partner's a scientist and helpfully obtained the tray for me. The liquid is simply water with red and blue food colouring. Daylight through my windows for lighting, shot from a tripod.
Processing
Bibble Pro:
- autolevel
- new WB: "shady"
- exposure: 1.22
- saturation: 22
- contrast: 25
- colour correction - red: val 15, sat 17
- colour correction - blue: val -
- sharpness: 120
PS:
- clone out minor reflections/dirt/colour bleed in red well
- minor dodge and burn
- duplicate layer: gaussian blur radius ~10px, layer mode screen, layer opacity 18%
- duplicate layer: gaussian blur radius ~5px, manually masked off subject, layer opacity 39%
- curves adjustment layer, opacity 21%
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