wildcat
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Well, the standard crossbowman is already in yellow and white colors ;)
So, your archer, as a first upgrade, looks more interesting, and it's also more logical.
Added 2 minutes later
In principle, you can repaint it white ;)
But I don't think it's worth it. Yellow looks better. It's a matter of taste, of course.
Besides, if you consider the option of making the White Angel the first alternative, the yellow one the second, and the red one the third, then white doesn't really suit the second alternative.
And in general, if you consider that the army is assembled not by colors, but by characteristics, then you don't need to think too much about the color.