With the Microsoft XNA Framework I can change the color of a tinted texture by changing it's integer values like so:
Int x = 255;
if(true) { x--; tint = new Color(x, 255, 255); }
Draw(texture, Vector2.Zero, tint);
If x were a float however the appearance of the sprite wouldn't change until the value x became zero. With integer the texture fades over time with the event change.
Why is this? :S
It's because of how overload resolution works in C#. Of the available constructors with three arguments, there are:
Color(int, int, int)
Color(float, float, float)
If you pass all integers, you get the integer version. But if you pass a float for any of the parameters, you get the float version (and the integers will be implicitly converted to floats).
The integer version takes values in the range of 0 to 255. The float version takes values in the range of 0.0f to 1.0f for each channel (and converts them internally to cover the integer range).
(See also this blog post)
