The hexadecimal color code #00a259 is a medium dark shade of green-cyan. In the RGB color model #00a259 is comprised of 0% red, 63.53% green and 34.9% blue. In the HSL color space #00a259 has a hue of 153° (degrees), 100% saturation and 32% lightness. This color has an approximate wavelength of 532.67 nm.
It is a widely accepted notion among painters that it does not matter what one paints as long as it is well painted. This is the essence of academicism. There is no such thing as good painting about nothing.
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Whether you succeed or not is irrelevant, there is no such thing. Making your unknown known is the important thing.