At first I thought I was being a bit anal in that I record every paint colour I use when doing up all the elements for an army.
I know that might not be much of an issue for well documented armies such as Romans and all that, but since I am focused on Biblical armies, there is nowhere near the amount of detail about many of the armies for that period than say more recent ones.
That being said, I was looking at some of the elements for my I/51 Assyrians last night and noticed some of them had paint chipped off
Rather than trying to figure the particular shade out by 'eye', I can just go back to my notes, and voila there is the colour I should use!
I'm not that focussed, but I did start recording the specific ground colour and flocking type for each army sometime before DBA3 came out, and I am grateful for that as I try to bring 100 armies up to code so that the vast number of additional elements have the same base.
I mistook the flocking for my Maurikian Byzantine, so they have two (slightly) different shades of a green flocking - and the mix of elements is about 50/50
Because it has my troops all over it. THAT makes it MINE!!!!
It may be a good idea to keep such records... I used a citadel paint brown for my Indians before I acquired some Cork Brown paint and can't remember which brown I used. Ive done this with other colours in the past but get round it by putting a dab of each paint on a palette and comparing it to the one I used to find the right one.
Oh macbeth, I can relate about the flocking, in my case it is the colours I have used to mix with my modelling paste when basing. I wish I had recorded them, as in the case when I decided to make a specific camp for my Philistine army, I could not remember what ratio of paints I used for their bases, and it took a while to get a close enough match.
I actually used Haardrada's approach of making a palette to figure it out.
I think the rub with using cheap paints, is that I have ended up purchasing far more than I really need, and have many colours that are of very similar shades, and they have such a small Δe between them, that the only way you can see the difference is by having them side by side.
I think I should invest in higher quality paints and limit myself to a similar number to what you have timurilank.
What I've done is to get some sheets of cardstock, rule them off, in pencil, into boxes roughly an inch square, and paint a splotch of each paint I get in each square. Usually I put a dark pencil line, diagonally across the box, first, so I know how much 'covering power' each color has, and paint a thick blob at top of the box and thin that to a 'wash' at bottom. But sometimes for close colors you have to squint at them in sunlight.
So I'm developing system. Usually I attach figures to cardboard pieces - cut up 'counter trees' from my boardgaming friends - for painting (either with 'poster tape' or white glue). Have started marking the ends of these pieces, and for future horse units, will have constant colors - ie., the horse at strip end A will be painted in Delta Burnt Sienna, B in Nicoles Cinnamon Stick, etc