We've been painting all manner of cases for electronic assemblies, and usually I have the paint professionally matched to an original color. The paint company uses an electronic probe to "read" the color and it gives them a recipe to mix an identical replacement color.
Today we had to paint one single unit, and that doesn't justify the time and expense of professional color matching. So I did it myself, by eye, adding a little of this and that, and some solvent, and painting tiny test strips to see how the color changes as the paint dries.
I've finished now, and the painted case matches the original pretty well. I got the "hue" right (sort of the blend of light and dark) but in the final analysis, the original has a touch of some brown characteristic, and I don't have any color to add for that. I wonder if the brown element is brought on by yellowing of the original paint as it ages?
My final result is perfectly fine, and close enough for government work, but looking carefully at color is kind of interesting. I don't scrutinize color very often, but there are umpteen subtle shades of every color, plus matte and gloss characteristics.
Today we had to paint one single unit, and that doesn't justify the time and expense of professional color matching. So I did it myself, by eye, adding a little of this and that, and some solvent, and painting tiny test strips to see how the color changes as the paint dries.
I've finished now, and the painted case matches the original pretty well. I got the "hue" right (sort of the blend of light and dark) but in the final analysis, the original has a touch of some brown characteristic, and I don't have any color to add for that. I wonder if the brown element is brought on by yellowing of the original paint as it ages?
My final result is perfectly fine, and close enough for government work, but looking carefully at color is kind of interesting. I don't scrutinize color very often, but there are umpteen subtle shades of every color, plus matte and gloss characteristics.