Having had some fun with "Dimensions" (which is currently with a prospective buyer), I elected to do another piece in similar colours. Blues and purples are sometimes hard to photograph with a digital camera because they are less sensitive to this end of the spectrum. Added to that also the problem with moderate winter light and this one proved no less awkward to photograph outdoors than the previous picture.
The most ideal set-up is indoors with bright directed lights and maybe white sheets to spread the light around and discourage shadows; unfortunately I don't have suitable lighting, it's all too yellow in tone.
These abstracty pieces are really experimental and sometimes they don't work out....every few years I ditch the canvas off of old stretcher-bars where grand ideas have flumped dismally in the first few hours. Occasionally the canvas is recycled, especially when it has only one layer of acrylic....passes good enough for re-use on smaller stretchers (like 10x8 inches for example), for either another acrylic or an oil.
I am changing some of my acrylic colours over to Ara, made by Old Holland. They come in large 250ml (and bigger) squeezy bottles, which is much more economical than the usual small 60ml tubes. They are lightfast, easy workable (not quite so heavy bodied as W&N) and apparently are classed as a good mid-range acrylic. My metallic paints are by Golden (USA)....not cheap but nice to use.
I'm planning another painting with a different colour-scheme...meanwhile it'll be back to the oils and I'd like to get started again on some still-life pieces.